Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
A rocket carrying the Venus climate orbiter called "Akatsuki" blasted off from a Japanese space center May 21.
NASA's Viking 1 spent more than six years on Mars, but Opportunity, one of the twin rovers that landed in 2004, has surpassed that record.
The new star spews huge quantities of calcium, which could account for the calcium present in our bones.
New information may solve mystery about why the universe is composed of matter and not antimatter.
Scientists want to analyze rock and soil samples for traces of alien bacteria or chemical or biological indicators of life.
Scientists think light flickers from exoplanets may show the presence of oceans, continents, and perhaps life.
This is the first of three spacewalks scheduled during Atlantis' final mission.
As Atlantis gets ready for it's final flight, experts share cool, little known facts about the iconic shuttle.
New study looks to see if Earth's bacteria could survive on the red planet.
NASA re-creates conditions of moon, Mars in underwater lab.
Robert Bigelow wants to assemble a lunar base in space and fly it to the moon.
The famed cosmologist outlines several ideas for crossing through time.
British scientists are developing a solar sail designed to clear space of dangerous debris.
At $102,000 a ride, Space Adventures is selling 'cheap seats' on new suborbital rocket ships.
28 future science missions planned to look for extraterrestrial life.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.