Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Check out eight amazing photos of our solar system's tiniest planet, Mercury.
New stretch of gas is slightly outside the plane of the rest of the galaxy which explains why astronomers didn't see it before.
Four astronomers who discovered evidence for dark matter have won the Gruber Foundation Cosmology Prize for their numerical models.
A space rock the size of a man burned up in the skies above Georgia. The meteor was the brightest one recorded by NASA's fireball-watching network.
Scientists believe the increased solar flares and the comets are coincidental.
Museums are taking advantage of NASA's long decommission process to ready the space shuttles' new homes.
Twin galaxy is nearly twice the size of the Milky Way.
Space agency turns its attention to the last flight of NASA's storied space shuttle program.
Endeavour and its six-astronaut crew completed the 16-day STS-134 mission to the International Space Station, its 25th and final flight.
Video: Shuttle Endeavour touched down safely at the Kennedy Space Center early Wednesday morning, completing its final mission to space.
Spectacular photos show Endeavour at the space station over nighttime Earth.
Details of the three odd eclipses that occur in June and July.
The International Space Station may be complete, but the outpost's crew still has some assembly to do. NASA's shuttle Endeavour delivered a large LEGO space station for astronauts aboard to build.
Atlantis's final launch is also the final launch of the space shuttle program.
A shower of the mineral olivine is helping scientists understand why comets, which form in the outskirts of our solar system, contain the same type of crystals.
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