NASA astronaut Don Pettit has snapped a striking shot of the super-bright comet racing past our planet for the first time in ...

So I grabbed my camera, ran outside, and looked up just as Mars was supposed to emerge from the Moon's curved horizon. Seen ...

It is 1,200 feet (370 m) deep, making it one of the deepest lakes in Russia, according to NASA's Earth ... that the sun's full beam is being reflected straight back at the astronaut taking the ...

NASA astronaut ... to Earth on Tuesday (Jan. 14) when it came within 88 million miles (142 million kilometers) of our planet. A day earlier, it reached perihelion, its closest point to the sun ...