Aquila, a constellation visible from the Northern Hemisphere. The name means "eagle." The Great Rift of the Milky Way (a dark area in the bright band of stars) passes through Aquila. The rift is caused by dark nebulae (clouds of dust in space) that hide the stars behind them. The brightest star in Aquila is Altair, the 12th brightest star in the sky.
Until recently, most people assumed that if Mars had liquid water, it no longer did and hadn't for quite some time. But scientists have recently noticed some anomalies in photos of Mars that may suggest there is water. Could there be life, too?
Hundred of meteors fly across the sky every night, but only a few make it to Earth. Meteors are best known for the brilliant streaks of light they make as they burn up in the atmosphere. Learn about 10 memorable meteor crashes that left an impression.