A critical failure in Kepler's alignment may spell the end for the storied planet hunter.
The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.
From New York, around Florida and up the Mississippi, all to study a subatomic particle that only lives two millionths of a second.
Scientists accidentally discover a new way to isolate gold that is much safer than existing processes, which use toxic cyanide.
Water, bread, eyes and vomit all do weird things in space. Chris Hadfield, who leaves his post as ISS commander today, explains.
When things go wrong on the International Space Station, astronauts often have to get creative with the repairs. Here are 5 of NASA's most MacGyver-y moments.
Click to launch the photo gallery
The Hinode telescope captures some amazing views of last week's annular solar eclipse.
The Mars rover will drill a new rock to double-check for signs the planet could once have been hospitable to life.
"I was freaked, because I was really close to it and was worried it was going to hit me."
The water may have already been on Earth when the moon was sheared away from it.
A new study discovered illness and birth defects among Gulf Coast fish nearly 16 months after the BP explosion.
The ability to recognize individuals by sound helps bats stay connected in the dark. Scroll down for an audio sample.
In a wide-ranging interview with PopularScience.com, Aldrin talks about a mission to Mars, 34 years of sobriety and the future of American leadership in space.
And it works kind of like a penis.
During breakfast on June 30, 1908, a man named S.B. Semenov was sitting on a porch at a northern Russian trading post when the sky burst into flames. He looked up and saw the heavens appear to split apart, and he felt as though his shirt was on fire; after a moment, a heavy blow knocked him off his feet and he passed out. The inferno, afterward known as the Tunguska Event, was a high-altitude explosion of a meteor or a comet--but nobody ever found the remains.