How will a private Mars mission in 2018 work?
The first results from the AMS experiment on the International Space Station are expected in about two weeks.
Private security efforts, as well as small-scale experiments, have significant effects in preventing crime.
Famed actor William Shatner, TV's Captain Kirk, called astronaut Chris Hadfield on the International Space Station.
Saul Perlmutter won the 2011 Nobel physics prize for helping discover that the universe's expansion was accelerating.
The EBEX project searched for a never-before-seen pattern in the light left over after the birth of the universe.
Just a week ago, Iran launched a monkey to space. Now, the country is looking toward launching humans.
The habitable zone defines the range of distances where a planet might support water, and perhaps life.