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NASA craft snaps last close-up photos of icy Saturn moon

<i>By Mike Wall, SPACE.com</i><p>NASA's Cassini spacecraft has snapped its last up-close photos of Saturn's icy moon Rhea, revealing a battered satellite covered in craters from violent impacts.<p>Cassini took the amazing new photos of Rhea on March 9 during its fourth and final planned encounter with the …

15 common Android problems and how to fix them

A Convincing Theory About Human Evolution

No ape had done that before.<p>It was an important milestone in the story of human evolution.<p>The ancestor in question, Homo erectus, could use simple tools and hunt. His diet was more meat-based than plant-based. Meat has more calories than food derived from plants. Humans had transformed themselves …

Anthropology

One of the Most Earthlike Planets Ever Found May Not Exist

What was thought to be a planet in the "Goldilocks Zone" of its star may have just been starspots.<p>All sorts of excitement accompanied astronomers' discovery of Gliese 581g in 2010—the alien world looked like Earth in both size and temperature, and thus seemed potentially hospitable to life.<p>But …

These Young Stars Will Eventually Rip Apart Their Mother Nebula, Astronomers Say (VIDEO)

Massive young stars that will eventually destroy their own stellar nursery shine brightly in a dazzling new photo.<p>Cosmic gas cloud Gum 15, which lies 3,000 light-years from Earth, is busily giving birth to huge stars that are, in turn, shaping the cloud's weird structure. That activity will …