The Moon, closer  MAY 19 2014

If the Moon orbited the Earth at the same distance as the International Space Station, it might look a little something like this:

At that distance, the Moon would cover half the sky and take about five minutes to cross the sky. Of course, as Phil Plait notes, if the Moon were that close, tidal forces would result in complete chaos for everyone involved.

There would be global floods as a tidal wave kilometers high sweeps around the world every 90 minutes (due to the Moon's closer, faster orbit), scouring clean everything in its path. The Earth itself would also be stretched up and down, so there would be apocalyptic earthquakes, not to mention huge internal heating of the Earth and subsequent volcanism. I'd think that the oceans might even boil away due to the enormous heat released from the Earth's interior, so at least that spares you the flood... but replaces water with lava. Yay?

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astronomy   Earth   Moon   Phil Plait   science   space   video

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