Cosmic radio burst caught in the act

Astronomers announced this week that - for the first time - they have observed a so-called 'fast radio burst' in real time.

Found! Mars orbiter locates lost 2003 Beagle lander

The Beagle 2 Lander, built by the U.K., and thought lost on Mars since 2003, has now been found in images from NASA's Mars Reconnaissance Orbiter.

Two planets beyond Pluto?

New calculations by astronomers in Spain and the UK suggest that not one, but two unknown planets might exist in our solar system, beyond Pluto's orbit.

How to see Comet Lovejoy in January 2015, plus best photos!

How to see Comet C/2014 Q2 Lovejoy - still visible through binoculars and telescopes. Finder charts and best photos!

Toxic chemical scare on International Space Station on Wednesday

An alarm indicated a possible leak of toxic ammonia. Astronauts evacuated the U.S. side of the station. Later, NASA said the problem might have been a faulty sensor.

First notable solar flare of 2015

It was an M-class flare, and it might have produced a brief communications blackout on Monday night. But no CME - coronal mass ejection - is headed our way.

Hurry! Mercury crater-naming contest ends January 15

Immortalize your favorite artist, composer, or writer! The competition to name five impact craters on Mercury closes on Thursday.

NASA’s way cool retro posters for futuristic space travel

Making future travel plans .. with an emphasis on 'future?' Check out these exoplanet travel posters from NASA.

SpaceX capsule docks with International Space Station

The SpaceX Dragon cargo spacecraft successfully docked with the International Space Station on January 12, bringing needed supplies to the six astronauts aboard.

Binary pulsar gives up secrets, then disappears

Scientists measure the space-time warp in the gravity of a binary star and find the mass of a fast-spinning pulsar -- just before the pulsar disappears.