SPACE.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier.
Launch Tomorrow for Satellites Set to Solve Earth's Magnetic Mysteries
The Magnetospheric Multiscale mission's four satellites are designed to study the phenomenon responsible for powerful bursts of powerful magnetic particles
Speediest Star's Origins Revealed
The Milky Way's fastest "hypervelocity" star probably picked up speed from a supernova
Scientists See Same Star Explode 4 Times
A galaxy-scale cosmic lens brings a faraway supernova into focus
Early Mars Lost an Ocean's Worth of Water
New maps pinpoint possible sites of the Red Planet's ancient seas and current underground reservoirs
Rough Seas Scuttle SpaceX Plans for Rocket Fly Back
The company had hoped to land the first stage of its Falcon 9 rocket on a robotic barge as part of its effort to develop fully reusable rockets
SpaceX Launch of Earth Observatory Satellite Delayed by Radar Glitch
The next chance to launch the satellite, championed by Vice President Al Gore, is today at 6:07 pm Eastern
Strange Comet Discoveries Revealed by Rosetta Spacecraft
The European mission is helping scientists learn more about how comets evolved through time
Private Space Taxis on Track to Fly in 2017
Boeing and SpaceX are on track to start launching astronauts to the International Space Station
Monster Winter Storm Spotted from Space
Imagery captured from Saturday through Monday (Jan. 24 to Jan. 26) by the U.S. National Oceanic and Atmospheric Adminstration's GOES-East spacecraft shows the storm's development and movement
Solar Plane's Route for Around-the-World Flight Revealed
Two Swiss pilots will attempt a record-setting flight around the world without using any fuel. Stops will include Oman, India, Myanmar, 2 cities in China and 4 U.S. sites
Lost Mars Lander Found in NASA Photos
The U.K.'s Beagle 2, which disappeared during a landing attempt in 2003, is clearly visible in new photos from the Mars Reconnaissance Orbiter currently at the Red Planet
Astronauts Evacuate from U.S. Side of International Space Station
An alarm suggested a potentially toxic ammonia leak on the International Space Station early Wednesday, but it might have been a false one
China Spacecraft Enters Orbit around the Moon
The service module from a past test flight around the moon arrived in orbit there this week
SpaceX Dragon Capsule Delivers Fresh Supplies to Space Station
The capsule was carried January 10 atop a Falcon 9 rocket that lifted off from Cape Canaveral. After launch the rocket came down as planned on a drone ship but hit a bit too hard
Jupiter Moon Europa's Giant Geysers Are Missing
Research teams are failing to confirm plumes of water vapor reported a year ago to have been spewing about 200 kilometers into space from Europa's south pole
Did Venus Have Carbon Dioxide Oceans?
Simulations suggest Venus could have once harbored seas of supercritical carbon dioxide
NASA Orion Space Capsule Back in Florida After Test Flight
The capsule, designed to bring humans farther into space than ever before, conducted its first unmanned test flight on Dec. 5
Ursid Meteor Shower Peaks Tonight: How to Watch
The Ursid meteor shower should offer skywatchers a good view this year
Launch of Deep-Space Capsule for Astronauts Is Delayed by Rocket Glitch
A series of delays thwarted repeated liftoff attempts on Thursday. A second attempt is set for Friday morning
Pluto Probe to Wake from "Hibernation" Next Month
NASA's New Horizons probe is set to awaken from 99 days during which the spacecraft's electronics were largely unpowered. Observations at the dwarf planet start in January
Leonid Meteor Shower Peaks Tonight: How to See It
This year, the Leonid meteor shower should treat skywatchers to beween 10 and 15 meteors per hour, a NASA meteor expert says
Philae Comet Lander Falls Silent as Batteries Run Out
The probe had been studying the surface of Comet 67P/Churyumov–Gerasimenko for 57 hours when it went to sleep, possibly for good
Comet-Chasing Rosetta Spacecraft Releases Probe for Ambitious Landing Attempt
Spectacular View of Newborn Planetary System Captured by Radio Telescope
A planet-forming disk around a million-year-old star has been imaged in unprecedented detail