A nebula that extends its hand into space

The Gum Nebula is an emission nebula almost 1400 light-years away. It's home to an object known as "God's Hand" among the faithful. The rest of us call it CG 4.

Shining a light on untapped lunar resources

Near the moon's south pole lies a 13-mile wide, 2.5-mile-deep crater known as Shackleton, named for Antarctic explorer Ernest Shackleton. Shackleton—and craters like it—may contain untapped resources that can be accessed ...

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