Zero G Isn't Gravity free

Watch a Space Shuttle launch and you'll hear about "zero gravity" and "zero G", terms that make people think (incorr...

A Different Angle on A Solar Eclipse

NASA's Solar Terrestrial Relations Observatory (aka STEREO) has a pair of satellites in orbit that can take pictures of the Sun simultan...

What Do You Call A Comet With No Tail?

Comet 17P/Holmes is now visible to the naked eye, and an even more striking sight if you use binoculars or a telescope. Nobody is sure why, ...