11 July 2014, 07:30 AM ET
Recent photos snapped by the European Space Agency's Rosetta spacecraft suggest that its target comet, known as 67P/Churyumov-Gerasimenko, is a lumpy object sporting three large structures, or perhaps a deep hole.
11 July 2014, 01:19 AM ET
A comet-galaxy conjunction is a rare opportunity for amateur astronomers.
10 July 2014, 05:40 PM ET
The curly string is about 100,000 light-years long and sports blue "pearls" — actually huge young star clusters — every 3,000 light-years along the way, researchers said. You can zoom in on the beautiful structure, and learn more about it, in this new Hub
10 July 2014, 03:08 PM ET
Like "beads on a string" star formation can be compared to droplets of rain New imagery from the Hubble Space Telescope merging elliptical galaxies reveals 19 compact clumps of young stars making up the string. FULL STORY: http://goo.gl/nWUiIt
10 July 2014, 06:24 AM ET
Violent supernova explosions create massive grains of cosmic dust large enough to survive the harsh environment of space.
10 July 2014, 06:00 AM ET
Astronomers have found the farthest-flung stars yet known in the Milky Way. The two objects lie at least 775,000 light-years away, making them both about five times more distant than the Large Magellanic Cloud, a satellite galaxy of the Milky Way.
09 July 2014, 10:02 PM ET
A galaxy more than 12 billion light years from Earth is heading for a “red and dead” future because it is running out of the fuel needed to make new stars.
09 July 2014, 04:52 PM ET
Do you want to help name an alien planet? Starting next year, space fans around the world will get the chance to vote on their favorite names for exoplanets and the planets' host stars.
09 July 2014, 04:13 PM ET
As a storm in the Pacific Ocean grew to a super typhoon and was downgraded again to a typhoon, watchful astronauts on the International Space Station kept people apprised of its progress through social media.
09 July 2014, 03:28 PM ET
The private team operating NASA's ISEE-3 spacecraft aimed to fire its engine seven times on Tuesday to change the probe's trajectory. While the first burn went as planned, the group encountered problems with the second one.
09 July 2014, 01:43 PM ET
In Homer Hickam's "Helium-3" sci-fi novels, the characters
09 July 2014, 12:22 PM ET
Crater Trueblood has his hands full in Homer Hickam's third "Helium-3" novel.
09 July 2014, 07:32 AM ET
If there were mechanics on Mars, NASA may have taken the Curiosity rover into the shop by now. The 1-ton robot has accumulated quite a bit of wheel damage since touching down inside Gale Crater in August 2012.
08 July 2014, 07:00 PM ET
A NASA spacecraft exploring Saturn and its many moons has captured an incredible photo of the planet's swirling vortex, weird hexagon and distinctive rings.
08 July 2014, 03:49 PM ET
On 12 July, 10 August and 9 September 2014, a full moon will occur when the satellite is closest to Earth in orbit. Called a ‘perigee moon’ its brightness is increased and size enlarged due to proximity to Earthbound skywatchers.
08 July 2014, 03:38 PM ET
An M6-class flare erupted from sunspot AR2113 on July 8th, 2014. NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths.
08 July 2014, 02:05 PM ET
The 30-minute webcast, which is called "Spotlight Live: The Hunt for Other Worlds Heats Up," begins at 3:00 p.m. EDT Wednesday. You can watch it live here on Space.com, courtesy of the nonprofit Kavli Foundation, which is hosting the discussion
08 July 2014, 02:00 PM ET
A NASA probe recently spotted the dazzling Pan-STARRS comet as it hurtled through space against the backdrop of a distant galaxy.
08 July 2014, 02:00 PM ET
Three astrophysicists will discuss the latest exciting discoveries in the field of exoplanet science Wednesday (July 9), and you can follow along live here at Space.com — and ask questions if you so desire.
08 July 2014, 01:13 PM ET
NASA's Aquarius mission, whose main mission is ocean salinity measurement, has been multitasked to deliver soil observations. It shows how seasons and weather change the moisture in the first 2 inches of soil around the globe.
08 July 2014, 12:11 PM ET
From 1838 to 1945, the star Eta Carinae spewed nearly 40x the Sun’s mass, creating the Homunculus Nebula. Astronomers have now created a high-res 3D model of the 2-lobed cloud of gas and dust. -- Can be 3D printed with this file: http://goo.gl/juFz3p
08 July 2014, 07:39 AM ET
A hotspot of powerful, ultrahigh-energy particles streams toward Earth from beneath the handle of the Big Dipper constellation. This newfound collection of cosmic rays may help scientists nail down the origin point of the powerful particles.
08 July 2014, 07:31 AM ET
With new data collected by NASA's Voyager 1 spacecraft, researchers can confirm that the far-flung probe is indeed cruising through interstellar space, as mission scientists announced last year.
08 July 2014, 01:44 AM ET
The sun sets over Paranal Observatory in this beautiful space wallpaper, painting an array of subtle hues across the sky reminiscent of a Monet landscape.
07 July 2014, 05:40 PM ET
The European Space Agency has selected the Athena X-ray observatory as its second "large-class" science mission. Athena — which will cost about 1 billion euros ($1.36 billion at current exchange rates) — is scheduled to blast off in 2028.
07 July 2014, 03:21 PM ET
Unusual arms, revealed in x-ray light, dive through the plane of NGC 4258, ejecting enormous amounts of gas and choking the ability for new stars to form.
07 July 2014, 02:52 PM ET
An incredibly detailed new map of Mars' southern highlands shows how profoundly liquid water sculpted the region long ago, especially two canyon systems known as Waikato Vallis and Reull Vallis.
07 July 2014, 01:02 PM ET
NASA STEREO-A and STEREO-B solar probes' orbits will take them out of view from Earth at different times in 2015 making communication very difficult.
07 July 2014, 09:46 AM ET
NASA's NEOWISE snapped a series of infrared images of C/2012 K1 (aka Pan-STARRS) in May 2014, when the comet was ~143 million miles away. The spiral galaxy, NGC 3726, is 55 million light years away. FULL STORY: http://goo.gl/bzopex
07 July 2014, 07:35 AM ET
'Active SETI' sounds like science fiction, but some astronomers are discussing it seriously today. The idea is a controversial, hot-button issue, with some researchers wary of sending signals out to touch base with intelligent aliens.
06 July 2014, 01:01 PM ET
A colossal but glancing smashup with a roughly Earth-size planet could have stripped away much of proto-Mercury's rocky mantle, explaining why the tiny, sun-scorched world has such a huge iron core today, researchers say.
06 July 2014, 12:47 PM ET
What was your favorite space news story of the last week?