Comet time lapse
A short time lapse of Comet Lovejoy appearing in the pre-dawn sky over the Andes. Wait for the last sequence...it's the best one.
Lovejoy was only discovered in Nov 2011 by an amateur astronomer. (via ★interesting)
Solar eclipse...by Saturn
The Cassini spacecraft caught this remarkable photo of Saturn eclipsing the Sun in 2006.
Click through for the big image and the massive image. If you look close can see the Earth in the image, for reals!
Moon cave!
Indian lunar orbiter Chandrayaan-1 has discovered a large cave on the Moon. Aside from the hey, cool, there's a cave on the Moon factor, the other big feature of the cave is its constant and temperate temperature.
Temperatures on the moon swing wildly, from a maximum of 262 degrees Fahrenheit to a minimum of -292. The cave holds steady at a (relatively) comfortable -4, since the moon's weather can't penetrate its 40-foot-thick wall. It could also protect astronauts from "hazardous radiations, micro-meteoritic impacts," and dust storms, according to paper published by the journal Current Science.
(via @juliandibbell)
How much is a planet worth?
Over at Boing Boing, Lee Billings has an interview with Greg Laughlin, an astrophysicist who recently came up with an equation for estimating the value of planets, a sort of Drake equation for cosmic economics.
This equation's initial purpose, he wrote, was to put meaningful prices on the terrestrial exoplanets that Kepler was bound to discover. But he soon found it could be used equally well to place any planet-even our own-in a context that was simultaneously cosmic and commercial. In essence, you feed Laughlin's equation some key parameters -- a planet's mass, its estimated temperature, and the age, type, and apparent brightness of its star -- and out pops a number that should, Laughlin says, equate to cold, hard cash.
At the time, the exoplanet Gliese 581 c was thought to be the most Earth-like world known beyond our solar system. The equation said it was worth a measly $160. Mars fared better, priced at $14,000. And Earth? Our planet's value emerged as nearly 5 quadrillion dollars. That's about 100 times Earth's yearly GDP, and perhaps, Laughlin thought, not a bad ballpark estimate for the total economic value of our world and the technological civilization it supports.
Auditioning replacements for the Moon
This video shows what various planets (Jupiter, Mars, etc.) would look like in the night sky if they orbited the Earth at the same distance as the Moon.
See also Imagining Earth with Saturn's rings and Helvetica! In! Space!
The new Zodiac
Early this week, I started seeing a little traffic to a post I wrote way back in March of 1999 called The new Zodiac.
An interesting calendrical tidbit: the Zodiac that everyone is familiar with today is actually based upon the movement of the sun through the constellations of 2500 years ago. Today, due to shifts in the earth's rotation and orbit, the sun moves through 13 constellations, not just 12.
The thirteen constellation is called Ophiuchus. As I'm writing, Ophiuchus is the #1 trending topic on Twitter right now and there are dozens of news articles on the topic in outlets like Time, Huffington Post, and The Washington Post. Patient Zero of this most recent round of new Zodiac reporting is this January 9 Minneapolis Star-Tribune article in which the updated Zodiac is listed as:
Capricorn: Jan 20 - Feb 16
Aquarius: Feb 16 - Mar 11
Pisces: Mar 11 - Apr 18
Aries: Apr 18 - May 13
Taurus: May 13 - Jun 21
Gemini: Jun 21 - Jul 20
Cancer: Jul 20 - Aug 10
Leo: Aug 10 - Sept 16
Virgo: Sept 16 - Oct 30
Libra: Oct 30 - Nov 23
Scorpio: Nov 23 - Nov 29
Ophiuchus: Nov 29 - Dec 17
Sagittarius: Dec 17 - Jan 20
Wikipedia has a slightly different calendar for 2011:
Aries: Apr 19 - May 14
Taurus: May 14 - Jun 21
Gemini: Jun 21 - Jul 21
Cancer: Jul 21 - Aug 11
Leo: Aug 11 - Sept 17
Virgo: Sept 17 - Oct 31
Libra: Oct 31 - Nov 21
Scorpio: Nov 21 - Nov 30
Ophiuchus: Nov 30 - Dec 18
Sagittarius: Dec 18 - Jan 21
Capricorn: Jan 21 - Feb 17
Aquarius: Feb 17 - Mar 12
Pisces: Mar 12 - Apr 19
Which calendar to believe? Who knows, but one thing is for sure: astrology remains a steaming pile of horseshit.
Death spiral and the other top astronomy photos of the year
Bad Astronomy lists its top fourteen astronomy photos of the year, including this nearly unbelievable spiral pattern caused by a binary star.
The object, called AFGL 3068, is a binary star, two stars in an 800-year orbit around one another. One of them is a red giant, a star near the end of its life. It's blowing off massive amounts of dark dust, which is enveloping the pair and hiding them from view. But the system's spin is spraying the material out like a water sprinkler head, causing this giant and delicate spiral pattern on the sky. And by giant, I mean giant: the entire structure is about 3 trillion kilometers (about 2 trillion miles) across.
Big orange ball
What is this, do you think? Electron microscope photo of pollen? Infrared tennis ball? Mars? The inside of a baseball?
It's actually a photo of the Sun taken at the H-alpha wavelength by an amateur astronomer.
Gliese 581g, we hardly knew ye
That habitable exoplanet discovery? Maybe not.
Astronomer Francesco Pepe of the Geneva Observatory in Switzerland, who spoke Oct. 11 at an International Astronomical Union symposium on planetary systems, reported a new analysis using only HARPS data, but adding an extra 60 data points to the observations published in 2008. He and his colleagues could find no trace of the planet.
Potential Earth-like exoplanet discovered
A team of scientists has discovered a potentially habitable planet located about 20 light years from Earth.
The paper reports the discovery of two new planets around the nearby red dwarf star Gliese 581. This brings the total number of known planets around this star to six, the most yet discovered in a planetary system other than our own solar system. Like our solar system, the planets around Gliese 581 have nearly circular orbits.
The most interesting of the two new planets is Gliese 581g, with a mass three to four times that of the Earth and an orbital period of just under 37 days. Its mass indicates that it is probably a rocky planet with a definite surface and that it has enough gravity to hold on to an atmosphere, according to Vogt.
Gliese 581, located 20 light years away from Earth in the constellation Libra, has a somewhat checkered history of habitable-planet claims. Two previously detected planets in the system lie at the edges of the habitable zone, one on the hot side (planet c) and one on the cold side (planet d). While some astronomers still think planet d may be habitable if it has a thick atmosphere with a strong greenhouse effect to warm it up, others are skeptical. The newly discovered planet g, however, lies right in the middle of the habitable zone.
Sam Arbesman's prediction of May 2011 might have been too conservative. And 20 light years...that means we could send a signal there, and if someone of sufficient technological capability is there and listening, we could hear something back within our lifetime. Contact! (thx, jimray)
Helvetica! In! Space!
Back in July, Ben Terrett wrote a post about how many instances of the word "helvetica" set in unkerned 100 pt Helvetica it would take to go from the Earth to the Moon:
The distance to the moon is 385,000,000,000 mm. The size of an unkerned piece of normal cut Helvetica at 100pt is 136.23 mm. Therefore it would take 2,826,206,643.42 helveticas to get to the moon.
But let's say you wanted to stretch one "helvetica" over the same distance...at what point size would you need to set it? The answer is 282.6 billion points. At that size, the "h" would be 44,600 miles tall, roughly 5.6 times as tall as the Earth. Here's what that would look like:
The Earth is on the left and that little speck on the right side is the Moon. Here's a close-up of the Earth and the "h":
And if you wanted to put it yet another way, the Earth is set in 50.2 billion point type -- Helvetically speaking -- while the Moon is set in 13.7 billion point type. (thx, @brainpicker)
Total solar eclipse video
It's not so much a video of a total solar eclipse (the recent one, as seen from Argentina on July 11) as a video of people watching a total solar eclipse.
The sound is key...the reaction is very much The Rapture/End Times/high on ecstasy. If I had a bucket list, seeing a total solar eclipse would be on it. (via bobulate)
Star on planet violence on the rise
A new Hubble discovery was announced today and it's not for the faint of heart. At least, that is, if you care deeply about mysterious exoplanets 600 light years away.
WASP-12b is orbiting a sun-like yellow dwarf star 600 light-years away and it has such a tight orbit (of only 1.1 days) that it is being roasted to nearly 2,800 degrees Fahrenheit. This superheated state has caused the doomed exoplanet to puff up to nearly twice the size of Jupiter.
WASP-12b is in trouble and there's no Willis/Affleck/Bay mission planned to save it. That said, it's going to take about another 10 million years for WASP-12b to be totally eaten, so it has time to cross a few things off its bucket list.
Star on the run
Today's wild space story is brought to us by Bad Astronomy:
We have a stellar cluster with thousands of times the Sun's mass embedded in a nebula furiously cranking out newborn stars. A lot of them are near the physical upper limit of how big a star can get. The whole thing is only a couple of million years old, a fraction of the galaxy's lifespan. One beefy star with 90 times the Sun's mass got too close to some other stars, which summarily flung it out of the cluster at high speed, fast enough to cross the distance from the Earth to the Moon in an hour (it took Apollo three days). The star is barreling through the flotsam in that galaxy, its violent stellar wind carving out a bubble of gas that points right back to the scene of the crime, nearly 4 quadrillion kilometers and a million years behind it.
Click through to see the pictures and read a more thorough write up.
PS: 70% of the reason I linked to this is because of the title, "Rampaging cannonball star is rampaging."
Pluto-related hate mail from children
The Natural History Museum got a lot of hate mail from children when they demoted Pluto from planet to a resident of the Kuiper Belt, including this one from a fellow named Will:
Top 10 astronomy photos of 2009
One of the better lists out there: the top astronomy photos of the year. From the list, this is a more detailed view of the Martian landscape than we're used to seeing:
My personal favorite, the photos taken by the LRO of Apollo 11's landing site, made the list as well.
Hubble goes deep
In 2004, the Hubble Space Telescope took an image called the Hubble Ultra Deep Field; basically astronomers pointed the Hubble toward an "empty" part of space and took a long-exposure shot in the visible spectrum. What they found were thousands of far away galaxies from early in the development of the universe. Now the Hubble has peered even deeper into the universe in near-infrared and captured this image:
Each one of those little specks is an entire galaxy, some only 600 million years old. Here's a zoomed-in section:
Milky Way chromoscope
Chromoscope provides views of the Milky Way galaxy in x-ray, visible, microwave, and several other EM wavelengths. This is the view in far infrared:
Water on the Moon
NASA announced that it has found pretty hard evidence of significant amounts of water on the Moon.
"We are ecstatic," said Anthony Colaprete, LCROSS project scientist and principal investigator at NASA's Ames Research Center in Moffett Field, Calif. "Multiple lines of evidence show water was present in both the high angle vapor plume and the ejecta curtain created by the LCROSS Centaur impact. The concentration and distribution of water and other substances requires further analysis, but it is safe to say Cabeus holds water."
I don't have to tell you about the implications here. Just think of how much you could sell authentic Moon bottled water for.
The Hubble's improved eyesight
Before and after photos from the Hubble telescope, which recently underwent spaceLASIK to extend the life and capabilities of the prolific telescope.
Astronomy Photographer of the Year winners
The Royal Observatory has announced the winners of its Astronomy Photographer of the Year contest.
I had no idea that images this sharp and detailed could be taken with non-pro ground telescopes...particularly these shots of the Horsehead Nebula and the surface of the Moon. More winners listed here.
Update: Jonathan Crowe notes that the gear used to take these photos isn't cheap.
The winner's photo of the Horsehead Nebula (mpastro2001 also had a second photo in the top five) used a 12 1/2" Ritchey-Chretien telescope ($21,500) and an SBIG STL11000 camera ($7,195 and up) with an AO-L adaptive optics accessory ($1,795) on a Paramount ME mount ($14,500). Total cost for just the equipment mentioned here: $44,990.
The solar superstorm of 1859
A massive solar flare on September 1, 1859 "caused the most potent disruption of Earth's ionosphere in recorded history".
Within hours, telegraph wires in both the United States and Europe spontaneously shorted out, causing numerous fires, while the Northern Lights, solar-induced phenomena more closely associated with regions near Earth's North Pole, were documented as far south as Rome, Havana and Hawaii, with similar effects at the South Pole.
(via the browser)
Hubble Ultra Deep Field in 3-D
Using redshift data, a 3-D animated view of the Hubble Ultra Deep Field was created.
Our three Suns
In early July, a photographer took a picture of what appears to be three Suns rising over Gdansk Bay in Poland.
The photographer insists that the effect was not created by the camera and was visible to the naked eye. The early consensus in the forums is that the photo was taken through a double-paned window.
We Choose the Moon
We Choose the Moon is a site that tracks the activities of the Apollo 11 mission as it happened 40 years ago. Nice work. The transmissions from the spacecraft, CAPCOM, and the lunar lander are cleverly published to and pulled in from Twitter.
With all this 40th anniversary stuff, I'm having trouble getting my mind around that the first Moon landing is as far removed from the present as the low point of The Great Depression was from my birth (i.e. the Moon landing, culturally speaking, is Ollie's Great Depression). See also timeline twins. (via jimray)
Sixty Symbols videos
From the folks who brought you The Periodic Table of Videos, Sixty Symbols is a series of videos on the symbols used in physics and astronomy. (via snarkmarket)
Apollo 11 mission on Twitter
The scamps at Nature are updating the ApolloPlus40 Twitter account as the Apollo 11 mission happened 40 years ago. (thx, matt)
More extrasolar planetary news
Oliver Morton fills us in on the current happenings in the search for planets outside of our solar system. A friend of his clued him in on a technique that could be used to not only discover planets but to determine if those planets show signs of supporting Earth-like life.
When they are passing in front of their stars, their atmospheres are backlit in a way that can make spectroscopic analysis of the different chemicals in their atmospheres comparatively easy: the wavelengths of light absorbed by the various chemicals will show up, in a tiny way, in the spectrum of the starlight. And this is what makes it possible to imagine looking at them for signs of life.
What scientists would look for are planets with unstable atmospheres, which James Lovelock said was an indication of life.
After the extragalactic planet post this morning, Sam Arbesman sent me a link to systemic, a blog dedicated to the search for extrasolar planets written by Greg Laughlin, one of the scientists involved in the effort. Here are two relevant posts. In Forward, Laughlin says we're very close to finding a nearby Earth-like planet:
Detailed Monte-Carlo simulations indicate that there's a 98% probability that TESS will locate a potentially habitable transiting terrestrial planet orbiting a red dwarf lying closer than 50 parsecs. When this planet is found, JWST (which will launch near the end of TESS's two year mission) can take its spectrum and obtain resolved measurements of molecular absorption in the atmosphere.
In Too cheap to meter, Laughlin presents a formula for the land value of such a discovery that depends on how far away the planet is, the age of the star it orbits, and the star's visual magnitude.
Applying the formula to an exact Earth-analog orbiting Alpha Cen B, the value is boosted to 6.4 billion dollars, which seems to be the right order of magnitude. And applying the formula to Earth (using the Sun's apparent visual magnitude) one arrives at a figure close to 5 quadrillion dollars, which is roughly the economic value of Earth (~100x the Earth's current yearly GDP)...
First extragalactic planet?
Scientists may have found the first planet located in another galaxy. The evidence is a little sparse but the search technique they're using is solid.
The idea is to use gravitational microlensing, in which a distant source star is briefly magnified by the gravity of an object passing in front of it. This technique has already found several planets in our galaxy, out to distances of thousands of light years. Extending the method from thousands to millions of light years won't be easy, says Philippe Jetzer of the University of Zurich in Switzerland, but it should be possible.
The Moon in HD
HD video of the Moon from 13 miles above the surface taken by Japan's KAGUYA probe. The probe's orbit has been decaying since it began circling the Moon and will crash on the surface at 18:30 GMT on June 10.
The search for a nearby second Earth
Using a Chilean telescope, astronomer Debra Fischer is leading a team searching for Earth-like planets around Alpha Centuri, our sun's nearest stellar neighbor.
RV shifts are how the vast majority of extrasolar worlds have been discovered, but only because these planets, called "hot Jupiters," are extremely massive and in hellishly close orbits around their stars. Their stellar wobbles are measurable in meters per second; seeing the much smaller centimeters-per-second wobble of an Earth twin is orders of magnitude more difficult. For the Alpha Centauri system, the feat is akin to detecting a bacterium orbiting a meter from a sand grain-from a distance of 10 kilometers. But by devoting hundreds of nights of telescope time to collecting hundreds of thousands of individual observations of just these two stars, Fischer believes she can eventually distill the faint RV signal of any Earth-like planets. It's simply a matter of statistics and brute force. The planets wouldn't reveal themselves as images in a telescope, but as steadily strengthening probabilistic peaks.
Stargazing
An excerpt from one of Galileo Galilei's letters to Don Virginio Cesarini:
Long experience has taught me this about the status of mankind with regard to matters requiring thought: the less people know and understand about them, the more positively they attempt to argue concerning them, while on the other hand to know and understand a multitude of things renders men cautious in passing judgment upon anything new.
Want more Galileo? The Istituto e Museo di Storia della Scienza in Florence is loaning out their exhibit, Galileo, the Medici and the Age of Astronomy to The Franklin in Philadelphia. It features one of the last two telescopes belonging to the astronomer, as well as his notes, paintings, and other instruments, including the cylindrical sundial and Michelangelo's compass.
Quadruple transit of Saturn
The Hubble Space Telescope captured four of Saturn's moons crossing its face at the same time. (via cyn-c)
HD video by Hubble telescope
This HD video taken by the Hubble telescope of Ganymede going behind Jupiter looks completely computer generated and surreal.
Top Ten Astronomy Pictures of 2008
Bad Astronomy has its list of the top 10 astronomy pictures of 2008 up. It includes this video of the moon orbiting the earth, comprised of a series of photos taken by a reassigned space probe.
There has never been a generation of humans in all of history who could see such an event. If you ever get a little depressed, or lonely, or think like there's nothing going on that's interesting any more, think on that for a moment or two. A thousand generations of people could only imagine such a thing, but we can actually do it.
(thx, amos)
How the universe might kill us
The universe is trying to kill us, let us count the (ten) ways.
Start worrying in a few million years about a cosmic dust collision, when the sun hits the closest spiral arm of our galaxy. Take your chances with an exploding star. Or manage to escape these threats, and you just get an extra 10^35 years before all matter decays anyway.
Bringing Pluto back to the solar system
Meg bought Ollie this ball a couple of weeks ago. It's got all the planets of the solar system on it, plus the Sun. But no Pluto. That's right, it's barely been two years since Pluto was demoted to dwarf planet status and the toy manufacturers have already made the adjustment.
It saddens me that Ollie has to grow up in a world where Pluto isn't considered a planet, although I take comfort that his textbooks probably won't be updated by the time he's in school. In the meantime, I've Sharpied Pluto onto his ball.
One ball at a time people, that's how we win.
Sunspots in Grand Central
Observe sunspots by going to Grand Central Terminal?
The southern wall of the Grand Concourse, facing 42nd Street, has semicircular grills high up, with small curlicued spaces like those in a leafy tree. Many of those spaces act like the aperture of a pinhole camera, reflecting an image of the sun that, when it reaches the floor, will be 8 to 12 inches wide. The smaller grill spaces will produce dimmer but sharper solar images on your paper.
(via 92y blog)
Iconic Hubble photos
From Harvard Magazine, an appreciation of the work that the Hubble telescope has done since its 1990 launch into orbit.
The "Pillars of Creation" may be the most iconic Hubble photograph ever taken. "Located in the Eagle Nebula, the pillars are clouds of molecular hydrogen, light years in length, where new stars are being born," says Aguilar. "However, recent discoveries indicate these pillars were destroyed by a massive nearby super nova some 6,000 years ago. This is a ghost image of a past cosmic disaster that we won't see here on Earth for another thousand years or so-and a perfect example of the fact that everything we see in the universe is history."
The Hubble Space Telescope was launched into
The Hubble Space Telescope was launched into space 18 years ago and to celebrate, NASA has put up a photo gallery of merging galaxies, galaxies as in love with each other as NASA is with the Hubble. Aww.
A photograph of the newest possible moon,
A photograph of the newest possible moon, one that's only about 15 hours old.
Finding the Moon when its slim crescent is still less than about 24 hours past the New Moon phase requires careful timing and planning, a challenging project even for experienced observers. In this sighting, only about 0.8 percent of the Moon's disk appears illuminated.
(via airbag)
The Earth and Moon as seen from Mars.
The Earth and Moon as seen from Mars.
The Hubble telescope recently captured an image
The Hubble telescope recently captured an image of a double Einstein Ring.
An Einstein Ring happens when two galaxies are perfectly aligned. The closer galaxy acts as a lens, magnifying and distorting the view of a more distant galaxy. But today astronomers announced that they've discovered a double Einstein Ring: three galaxies are perfectly aligned, creating a double ring around the lensing galaxy.
A list of the top 10 astronomy images
A list of the top 10 astronomy images of 2007, including entwined galaxies and a dying star.
On the origin of the Earth's moon
On the origin of the Earth's moon and how our planet would be different if we didn't have a moon.
The Moon has been a stabilizing factor for the axis of rotation of the Earth. If you look at Mars, for instance, that planet has wobbled quite dramatically on its axis over time due to the gravitational influence of all the other planets in the solar system. Because of this obliquity change, the ice that is now at the poles on Mars would sometimes drift to the equator. But the Earth's moon has helped stabilize our planet so that its axis of rotation stays in the same direction. For this reason, we had much less climatic change than if the Earth had been alone. And this has changed the way life evolved on Earth, allowing for the emergence of more complex multi-cellular organisms compared to a planet where drastic climatic change would allow only small, robust organisms to survive.
Comet Holmes brightened a millionfold late this
Comet Holmes brightened a millionfold late this week and has become visible to the naked eye, even in bright cities. The second chart on this page shows how quickly the comet shot up in brightness.
Using adaptive optics, which corrects for atmospheric
Using adaptive optics, which corrects for atmospheric distortion, some astronomers have modified a ground telescope to yield sharper images than the Hubble.
Hubble's optics provide greater detail over a wider angle, while the Lucky camera as used at Palomar gives ultra-high resolution only for a tiny slice of the sky at one time.
This New Yorker article on light pollution
This New Yorker article on light pollution makes mention of the Bortle Dark-Sky Scale, which is a measure of how bright the stars are in a particular part of the sky.
In Galileo's time, nighttime skies all over the world would have merited the darkest Bortle ranking, Class 1. Today, the sky above New York City is Class 9, at the other extreme of the scale, and American suburban skies are typically Class 5, 6, or 7. The very darkest places in the continental United States today are almost never darker than Class 2, and are increasingly threatened. For someone standing on the North Rim of the Grand Canyon on a moonless night, the brightest feature of the sky is not the Milky Way but the glow of Las Vegas, a hundred and seventy-five miles away. To see skies truly comparable to those which Galileo knew, you would have to travel to such places as the Australian outback and the mountains of Peru.
Arecibo Observatory, the world's largest radio telescope,
Arecibo Observatory, the world's largest radio telescope, is in danger of being shut down due to budget cuts. Arecibo could run for almost two years for the cost of a single F-16 fighter jet...to say nothing of the small fraction of the cost of the War in Iraq required.
Is the search for aliens such a
Is the search for aliens such a good idea? If/when we find evidence of extraterrestrial intelligent life, will they welcome us as neighbors, treat us as vermin in their universe or something inbetween? "Jared Diamond, professor of evolutionary biology and Pulitzer Prize winner, says: 'Those astronomers now preparing again to beam radio signals out to hoped-for extraterrestrials are naive, even dangerous.'"
Poor Pluto. First they demoted it from
Poor Pluto. First they demoted it from planet status and now it's not even the biggest dwarf planet in the solar system.
Are there many small galaxies, like the
Are there many small galaxies, like the one just discovered just outside our own, orbiting the larger visible galaxies?
Three trillion years from now, the universe
Three trillion years from now, the universe will be observably static, the Milky Way alone, and scientists of the day likely won't be able to "infer that the beginning involved a Big Bang".
Closeup videos of the sun. The bottom
Closeup videos of the sun. The bottom one is especially mesmerizing.
How to survive a black hole. If
How to survive a black hole. If you're in a rocket ship about to fall into a black hole, you might live a bit longer if you turn on your engines. "But in general a person falling past the horizon won't have zero velocity to begin with. Then the situation is different -- in fact it's worse. So firing the rocket for a short time can push the astronaut back on to the best-case scenario: the trajectory followed by free fall from rest."
Scientists have found an Earth-like planet orbiting
Scientists have found an Earth-like planet orbiting one of the closest stars to our solar system. "On the treasure map of the universe, one would be tempted to mark this planet with an X."
For next time around, how to photograph
For next time around, how to photograph a lunar eclipse. Here's a list of upcoming eclipses. (via inmyallstars)
Nice composite photo of the lunar eclipse
Nice composite photo of the lunar eclipse last night. We missed it because it was a bit cloudy and tall buildingy in NYC last night. (thx, ajit)
Update: Here's another, another, and one more.
On tonight's to-do list: total lunar eclipse.
On tonight's to-do list: total lunar eclipse. Totality occurs at 5:44pm ET and will last about an hour. On the east coast of the US, the moon will already be eclipsed when it rises. Best bet for seeing it is Africa, Europe, and the Middle East (see map).
Astronomers are tracking a 250-meter-wide asteroid called
Astronomers are tracking a 250-meter-wide asteroid called Apophis which will come within 30,000 km of earth in 2029. However, it's too soon to tell if that near-miss will pull the asteroid into a collision course with the earth 7 years later. "Lu says the best way to deflect an asteroid is with a 'gravity tractor' -- a spacecraft displacing about 1 metric ton that simply hovers near an asteroid and gently tweaks its orbit."
Top 100 photos taken by the Hubble Space
Top 100 photos taken by the Hubble Space Telescope, a singularly talented photographer.
Woo, NASA finally decides to fix the
Woo, NASA finally decides to fix the Hubble, repairs that will keep it working until at least 2013. "Scientists expect an upgraded Hubble to continue to make groundbreaking discoveries."
They shut all the lights off in
They shut all the lights off in Reykjavik last Thursday so that residents might see the stars without light pollution. What a lovely idea.
Is "dwarf planet" an ironym? "Pluto is
Is "dwarf planet" an ironym? "Pluto is a dwarf planet, but we are now faced with the absurdity that a dwarf planet is not a planet." (thx, adriana)
Pluto mnemonic device contest results
After hearing the news that Pluto had been demoted from its full planetary status in the solar system, Meg and I decided to hold a contest to find a new mnemonic device for the planets, replacing the old "My very elegant mother just served us nine pizzas" (among others). The mnemonic could work for either the new 8 planet line-up, the 8 major + 3 dwarf planets, or the old 9 planet arrangement in protest of Pluto's demotion. Thanks to everyone who entered; we received a bunch of great entries and it was hard to choose a winner. But first place goes to Josh Mishell for:
My! Very educated morons just screwed up numerous planetariums.
Josh's protest mnemonic is memorable, topical, and goes beyond a simple description of the shameful proceedings in Prague to real-world consequences. As the winning entrant, Josh will receive a print from HistoryShots...we're suggesting Race to the Moon. Congratulations to Josh.
Now, some runners-up. These came very close to winning:
Many Very Earnest Men Just Snubbed Unfortunate Ninth Planet (Dave Child)
"My vision, erased. Mercy! Just some underachiever now." (Delia, as spoken by Pluto discoverer Clyde Tombaugh)
Most vexing experience, mother just served us nothing! (Bart Baxter)
There were several entries that referenced vegetarianism and veganism; this haiku by Evan Norris was my favorite:
most vegans envy
my jovian silhouette,
not usually
Update: A reader noted that Evan's haiku incorrectly swaps the positions of Neptune and Uranus. Happily, "usually not" works just as well. (thx, peter)
The honorary mention for lack of sophistication goes to Andrea Harner and Jonah Peretti for:
Molesting Very Excitedly, Michael Jackson Sucks Underage Nipples
Best foreign language award goes to Bernardo Carvalho for his Portuguese mnemonic (remember, "Earth" is something like "Terra" in Portuguese so the t fits. And we'll ignore the e too...):
minha velha, traga meu jantar: sopa, uva, nozes e pão (Translated: "Old woman, bring me dinner: soup, grapes, nuts and bread")
And here are some of the best of the rest:
Mollifying voluminous egos means judiciously striking underappreciated named planetoid (Bruce Turner)
Most Virgins Eventually Marry Jocks So Unscrupulously Naughty (Aaron Arcello)
Morons Violate Every Map Just So UFOs Navigate Poorly (Sean Tevis)
My violin emits minimal joy since union nixed Pluto (C.D.)
Maximum velocity earns many joyous shouts, unless not planetary (Scott Tadman)
Thanks again to everyone who entered!
You've got about 4 hours left to enter
You've got about 4 hours left to enter the Pluto mnemonic device contest. We're getting some great entries, but I know you will come up with something better.
Pluto not a planet anymore
Boo, astronomers, boo!!!
Astronomers meeting in the Czech capital have voted to strip Pluto of its status as a planet. About 2,500 experts were in Prague for the International Astronomical Union's (IAU) general assembly. Astronomers rejected a proposal that would have retained Pluto as a planet and brought three other objects into the cosmic club. Pluto has been considered a planet since its discovery in 1930 by the American Clyde Tombaugh.
Screw this, what about all of Pluto's mindshare? Now we're going to need a new mnemonic device.
Update: Meg and I came up with a mnew mnemonic device in protest of the Pluto decision:
Man, very erroneous! Moronic jerks shouldn't uninclude neat Pluto.
And you know what that means! Mnemonic device contest! Send in your best mnew mnemonic device for remembering the planets (either for the old 9 planets or the new 8 planets) and you'll be entered to win an as-yet-unspecified prize. All entries must be sent with the subject line "Pluto mnemonic device contest" and must be received by 5pm ET today. I'll publish the winners sometime soon. Contest update: Ok, pencils down, it's 5pm and the contest has concluded. Judging will take place soon and the still-as-yet-unspecified prize will be awarded directly following.
A star is "on the brink" of
A star is "on the brink" of going type 1a supernova, something modern scientists have never witnessed. BTW, when you're dealing with stars, "on the brink" could refer to a period of time up to 100,000 years from now. Oh, and if you're the type of person who likes to be a smart ass in the back of the room, you'll note that since the star is nearly 2000 light years away, we may have already missed it. Nerd.
Jupiter is growing another big red spot.
Jupiter is growing another big red spot. The gas giant has been told by solar system pals to "keep an eye on it" and "have it checked out" if it gets any bigger.
How do you find extra-solar planets? "I
How do you find extra-solar planets? "I think the techniques employed by planet-hunters are pretty cool so the following is a brief primer on how the techniques work and the pros and cons of each."
A relativistic examination of gravity in the
A relativistic examination of gravity in the galaxy may indicate that the invention of dark matter may not be necessary to solve the not-enough-matter problem. "The motions of stars in galaxies is realized in general relativity's equations without the need to invoke massive halos of exotic 'dark matter' that nobody can explain by current physics."
Update: mjt has doubts about the paper referenced here and notes that there's other evidence for dark matter that is not questioned by the above study.
Scientists want to build an array of
Scientists want to build an array of submillimeter telescopes across the whole earth to peer "inside" the massive black hole at the center of the galaxy.
Update: Many people wrote in to correct me in saying that "submillimeter" referred to the size of the telescopes...it of course referred to the EM wavelength. Me brain not working right.
A couple of guys calculated the average
A couple of guys calculated the average color of the universe to be turquiose. Then it turned out they had made an error and the actual color of the universe is beige.
Odd story of one astronomer possibly "stealing"
Odd story of one astronomer possibly "stealing" another astronomer's discovery of a large trans-Neptunian object. The original discoverer alleges that the usurper looked at a couple of Web sites that detailed the discovery and where the discover's telescopes were pointed...the astronomy equivalent of stealing signs.
Astronomers have determined the precise location and
Astronomers have determined the precise location and time that Ansel Adams took a famous photograph of the moon in Yosemite National Park and are going to attempt to recreate the shot in September. The same forensic team has previously determined when Van Gogh painted "White House at Night".
Suggestions for the name of our solar
Suggestions for the name of our solar system's tenth planet from New Scientist readers. Neither Matt Webb's suggestion (Daes) nor this suggestion on LJ (America) are on the list.
Fun new book from O'Reilly's Hacks series: Astronomy Hacks
Fun new book from O'Reilly's Hacks series: Astronomy Hacks. "This handy field guide covers the basics of observing, and what you need to know about tweaking, tuning, adjusting, and tricking out a 'scope."
Check out the moon illusion for yourself
Check out the moon illusion for yourself this week; it's the lowest-hanging full moon in 18 years.
Gaia telescope will map the Milky Way with 1.5 gigapixel camera
Gaia telescope will map the Milky Way with 1.5 gigapixel camera.
Astronomers may have detected the formation of a black hole
Astronomers may have detected the formation of a black hole. "A faint visible-light flash moments after a high-energy gamma-ray burst likely heralds the merger of two dense neutron stars to create a relatively low-mass black hole."
We're still finding lots of new moons
We're still finding lots of new moons around the planets in our solar systems. Twelve new ones were just discovered around Saturn and Jupiter now has 63.
A near perfect Einstein Ring found
A near perfect Einstein Ring found. Close galaxies can act as a lens for farther galaxies, focusing the distant light with an "Einstein Ring".
