The existence and behavior of dark matter is puzzling indeed, but some UK astrophysicists speculate that adding three more spacial dimensions to the universe explains the gravitational behavior of dark matter. If they exist, these extra dimensions would be about a nanometer across. A baby step toward string theory?
...is a weblog about the liberal arts 2.0 edited by Jason Kottke since March 1998 (archives). You can read about me and kottke.org here. If you've got questions, concerns, or interesting links, send them along.