07 December 2014, 08:00 AM ET
The mysterious circular feature, which was imaged by NASA's Mars Reconnaissance Orbiter, measures about 1.2 miles (2 kilometers) wide. It possibly had a volcanic origin, NASA officials say.
07 December 2014, 08:00 AM ET
On Nov. 28, mission controllers lost contact with the European Space Agency's Venus Express spacecraft, which has been circling Earth's hellishly hot "sister planet" for more than eight years. The probe may have run out of fuel, its handlers say.
06 December 2014, 08:00 AM ET
The New Horizons probe is coming out of hibernation for the last time as it approaches the dwarf planet Pluto and the icy depths of our solar system.
04 December 2014, 11:47 PM ET
This spectacular space wallpaper by ALMA reveals Mira’s secret life. Studying red giant stars tells astronomers about the future of the Sun — and about how previous generations of stars spread the elements needed for life across the Universe.
04 December 2014, 05:10 PM ET
The way we define life has consequences for the search for life on other worlds such as Mars, Jupiter's moon Europa and the Saturn satellite Enceladus.
04 December 2014, 03:00 PM ET
The European Extremely Large Telescope (E-ELT), which will feature a primary mirror 128 feet wide, has been greenlit for construction in Chile, officials with the European Southern Observatory announced Thursday (Dec. 4).
04 December 2014, 02:01 PM ET
The moon once had a magnetic heart, which helped the moon generate a magnetic field stronger than Earth's is now, researchers say.
04 December 2014, 11:32 AM ET
The European Extremely Large Telescope (E-ELT) will be able to gather 13X more light than any optical telescope in existence and with its adaptive optics will provide sharper resolution than the NASA/ESA Space Telescope.
03 December 2014, 06:35 PM ET
A debate has long raged among scientists over the possible existence of life on Mars, and a new study is adding fuel to the fire.
03 December 2014, 06:22 PM ET
Humanity can dramatically reduce its frightening vulnerability to cataclysmic asteroid strikes with just a little extra funding and a little extra effort, say the organizers of the "Asteroid Day" educational campaign.
03 December 2014, 03:51 PM ET
Intense volcanic activity could have spewed tons of greenhouse gases into the Martian atmosphere, warming the Red Planet enough for water to flow billions of years ago.
03 December 2014, 01:38 PM ET
With its ability to detect powerful X-rays, NASA’s NuSTAR identified the source of one of the Milky Way’s brightest gamma-ray sources.
02 December 2014, 11:54 PM ET
This stunning space wallpaper is an artist's impression showing schematically the mysterious alignments between the spin axes of quasars and the large-scale structures that they inhabit that observations with ESO’s Very Large Telescope have revealed.
02 December 2014, 11:48 PM ET
Japan's second asteroid-sampling spacecraft, the Hayabusa 2, has launched on a 16-year voyage to collect pieces of a space rock and return them to Earth. See how the mission will work here.
02 December 2014, 11:00 AM ET
Mars One has selected 10 finalists from dozens of proposed payloads submitted by university groups around the world. One of these experiments will be chosen to fly on Mars One's robotic lander mission in 2018 — and the public will pick the winner.
02 December 2014, 07:00 AM ET
Japan is counting down to launch the Hayabusa2 asteroid-chasing spacecraft on a mission to collect samples of a space rock and you can watch it live via webcast tonight (Nov. 30). Here's how.
01 December 2014, 10:30 PM ET
Dark matter might be made of clouds of energy cracks instead of particles and may be detectable in GPS signals.
01 December 2014, 03:43 PM ET
First the Geminids (12/13-12/15) and then the Ursid (12/22-12/23) meteors will 'rain' in the night sky in December. Also, Jupiter, Venus, Mercury, Mars, Uranus and Neptune are great skywatching targets. Comet PanSTARRS and comet Siding Spring are vi
01 December 2014, 09:36 AM ET
The Japan Aerospace Exploration Agency (JAXA) asteroid probe is scheduled to launch aboard a H-IIA Launch Vehicle on Dec. 3rd, 2014. It will explore asteroid 1999 JU3 and will take samples 3 times during the mission.
01 December 2014, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in November 2014.
30 November 2014, 10:00 AM ET
See photos from Japan's Hayabusa 2 mission to collect samples of the asteroid 1999 JU3 by 2020. The mission launches in 2014 for a 2018 rendezvous with the asteroid.
29 November 2014, 08:00 AM ET
A robot that can scale the faces of steep cliffs might one day help explore Mars and find signs of life.
28 November 2014, 06:18 PM ET
A rock from space is giving scientists the first natural sample of a mysterious mineral that has never been seen before.
28 November 2014, 07:24 AM ET
These amazing images show the planet Mars passing below two nebulas. Astrophotographer Derek Demeter took the images from the Stardust Ranch in Okeechobee, Florida.
28 November 2014, 07:22 AM ET
Astronomers are searching for gravitational waves possibly emitted by "strange stars," superdense objects made of exotic matter.
27 November 2014, 07:12 AM ET
Titan's "prebiotic" environment consists of molecules that could be a precursor to life.
26 November 2014, 03:00 PM ET
NOAA satellites captured the early formation of the Thanksgiving nor'easter that could wreak havoc on holiday travelers.
26 November 2014, 02:01 PM ET
Could life survive a trip on a comet, or the tip of a rocket? New evidence shows that DNA samples remain functional after a trip on the outside of a low-orbit rocket.
26 November 2014, 01:01 PM ET
Researchers have measured the distance to the active galaxy NGC 4151, dubbed "The Eye of Sauron," with unprecedented precision. This calculation enabled them to determine that NGC 4151's central black hole is 40 percent more massive than thought.
26 November 2014, 09:42 AM ET
NOAA has released satellite imagery of the storm set to snarl holiday travel on Nov. 26th, 2014. The storm can be seen traveling from south to north along the east coast of the United States.
26 November 2014, 07:31 AM ET
A multicolored group of stars shine at the bottom of a cosmic wishing well in an amazing new image.
26 November 2014, 06:00 AM ET