19 September 2014, 07:00 AM ET
Why do NASA and other space agencies keep sending robotic probes to Mars? Because the planet is close to Earth, may be able to support life and is a chief long-term target for human exploration.
19 September 2014, 01:00 AM ET
In what some call an act of cosmic cannibalism, the Andromeda galaxy will devour our Milky Way in about 5 billion years.
18 September 2014, 03:29 PM ET
SpaceX is due to bring some strange things to the space station this weekend: the first 3D printer to leave the plant, a batch of mutant fruit flies, a wind-watching radar, 20 mice and a mouse X-ray machine.
18 September 2014, 01:39 PM ET
The gas giant WASP-18b, 10X larger that Jupiter, orbits its relatively young parent star in just 23 hours. With the planet that close, the star’s magnetic field may be damped so much it is emitting x-rays at old age star rates.
18 September 2014, 10:42 AM ET
Volcanic eruptions can dramatically deepen the hue of lunar eclipses. But even with recent activity around the Pacific, the Oct 8th, 2014 passing of Earth's shadow is expected to be a normal coppery red.
18 September 2014, 06:00 AM ET
NASA's MAVEN probe is slated to arrive at the Red Planet around 9:50 p.m. EDT Sunday. The spacecraft's handlers are reporting no problems during the home stretch of its 10-month space journey.
18 September 2014, 06:00 AM ET
As the liquid on Titan interacts with the crust of the moon, changes in their composition could reveal processes from deep underground.
18 September 2014, 06:00 AM ET
Experts will debate different definitions of the term "planet" during a live webcast tonight at 7:30 p.m. EDT. Watch it live here on Space.com.
18 September 2014, 12:23 AM ET
This stunning space wallpaper from the VLT Survey Telescope at ESO’s Paranal Observatory in northern Chile shows the globular cluster Messier 54. This cluster looks very similar to many others, but it has a secret.
17 September 2014, 03:50 PM ET
The history of the Milky Way has a new wrinkle. Scientists used radio telescopes like the Atacama Large Millimeter/submillimeter Array — a vast array of receivers in Chile — used to probe galaxies within 40 million to 600 million light-years from Earth.
17 September 2014, 02:28 PM ET
In the 1998 movie 'Armageddon,' an asteroid the size of Texas threatens to collide with Earth in 18 days. Despite its entertainment value, the film is fantastically inaccurate, astronomer Phil Plait said.
17 September 2014, 01:18 PM ET
Astronomers have found that a small, nearby galaxy may harbor a giant secret — a supermassive black hole at its heart equal in mass to about 21 million suns.
17 September 2014, 01:00 PM ET
M60-UCD1 is five hundred times smaller than our Milky Way Galaxy, yet its core contains a singularity 5 times larger. This black hole comprises 15% of the little galaxy’s total mass of about 140 million Suns.
17 September 2014, 12:05 AM ET
The Wide Field Imager (WFI) on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile captured this space wallpaper of dark cloud Lupus 4 blotting out background stars.
16 September 2014, 09:00 PM ET
Gravitational forces interact during the the merger to form a disc. Red = Gas moving away from Earth, Blue = Gas approaching Earth.
16 September 2014, 07:03 AM ET
Astronomical clues could pinpoint the day Claude Monet painted "Impression, Soleil Levant (Impression, Sunrise)," the piece that lent its name to the Impressionist art movement.
15 September 2014, 04:48 PM ET
The U.S. Air Force and NASA have ironed out problems that prevented scientists from obtaining a steady stream of military tracking data on meteor explosions within Earth's atmosphere. The result could help researchers safeguard Earth from potential impact
15 September 2014, 01:04 PM ET
The category-3 hurricane crashes into Mexico's Baja Peninsula in this time-lapse video from the NOAA GOES-15 weather satellite.
15 September 2014, 11:14 AM ET
See amazing photos of the northern lights from early September 2014 sparked by two intense solar storms on Sept. 8 and 10. Amateur astronomers captured these stunning northern lights views.
15 September 2014, 10:30 AM ET
NASA's twin Voyager spacecraft spotted many bright clumps in Saturn's F ring when they flew by the gas giant in the early 1980s.
15 September 2014, 07:00 AM ET
A concept mission that would fire scientific missiles at Mars to search for signs of subsurface life is making technical strides, team members say, but it still needs quite a bit of financial help to get off the ground.
15 September 2014, 06:56 AM ET
The European Space Agency on Monday (Sept. 15) unveiled the target comet landing site for its historic Rosetta mission, which will drop the Philae lander on Comet 67P/Churyumov-Gerasimenko in November.
15 September 2014, 06:09 AM ET
Rosetta is a spacecraft launched by the European Space Agency with a 10-year mission to rendezvous with a comet.
14 September 2014, 12:06 AM ET
What was your favorite space news story of the last week?
13 September 2014, 10:51 AM ET
From a colorful map of Rosetta Probe's comet target to a video of a trash-filled spaceship's fiery demise, don't miss these amazing space images of the week for Sept. 13, 2014.
12 September 2014, 05:48 PM ET
NASA is staunchly defending the science plans for its flagship Mars rover Curiosity in the wake of a recent senior-level review that at times harshly criticized the mission's science operations.
12 September 2014, 05:06 PM ET
Scientists drew borders around the distinct landscapes of a comet where the Rosetta spacecraft will land this fall.
12 September 2014, 05:00 PM ET
For the first time, astronomers have detected water ice clouds, like the ones that shroud Earth, around a dim celestial body outside of our solar system.
12 September 2014, 09:41 AM ET
ESA’s Rosetta mission will attempt to to land its Philae lander on comet 67P/Churyumov-Gerasimenko in November 2014. ESA recently released their 5 top choices and on September 15th, 2014 they will announce the landing site (and its backup).
12 September 2014, 08:33 AM ET
The Mars Science Laboratory has driven nearly 5 miles on the surface of the Red Planet and is ready to start the next phase of its mission. Curiosity mission scientist Katie Stack reports.
12 September 2014, 07:00 AM ET
Talk about "off-Earth roading." The car company Land Rover is partnering with the private spaceflight company Virgin Galactic to send the most adventurous people it can find into space.
12 September 2014, 06:32 AM ET
Two waves of solar material blown out by powerful sun eruptions n this week are hitting the Earth now, and could amplify the aurora displays for observers in northern regions.