A burp of methane on Mars would indicate that the planet might be more alive than previously thought. But where did it come from?
NASA on Tuesday selected nine science instruments it believes will best address the burning question about whether Jupiter’s ocean-bearing moon Europa has indications of life.
The stellar runts of the galaxy probably aren't so great for nurturing Earth-like worlds, say scientists running new simulations of the formation of planets around a variety of stars.
Jupiter and our moon will perform a celestial dance tonight, clear skies willing.
The feature film juxtaposes the end of NASA's space shuttle program in 2011 with the space age future Walt Disney envisioned when he opened Tomorrowland in 1955.
Pluto is 1/6th the size of Earth, but it has 5 moons. Jupiter has 67. Why does the Earth have just 1 moon?
A rainbow-like halo surrounded the sun over Mexico City on Thursday, an optical phenomenon that triggered a social media frenzy.
An ongoing act of cosmic cannibalism may be responsible for the strange appearance and unprecedented behavior of a gigantic star nicknamed Nasty 1.
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