Scorpius, a constellation in the Southern Hemisphere and the eighth sign of the zodiac. (The sign of the zodiac is known as Scorpio.) From the mid-north latitudes the constellation can be seen in the south during summer. The bright, reddish star Antares is the brightest star in Scorpius.
A lunar land rush is the most likely thing in the world (or, rather, out of it). As private companies gaze spaceward with dollar signs in their eyes, it's time to start settling some questions about space ownership, use and management.
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?