15 April 2015, 01:01 PM ET
A key ingredient of the early Earth may have been a chunk of rock much like Mercury, scientists say. This finding could help explain how Earth's magnetic field has lasted for billions of years, researchers added.
15 April 2015, 11:37 AM ET
The world looks different to Neil deGrasse Tyson because he’s an astrophysicist. When a great communicator gets his hands on an elegant tool, enlightenment (and, yeah, a little ego) ensues. But why did @NeilTyson choose Twitter? He tells Space.com.
15 April 2015, 07:40 AM ET
Strange bright spots on the surface of the Ceres continue to mystify scientists even as NASA's Dawn spacecraft is beaming the best maps yet of the dwarf planet in the asteroid belt.
15 April 2015, 07:16 AM ET
NASA's New Horizons mission to Pluto has returned its first color image of the dwarf planet and its largest moon, Charon. The new photo was taken on April 9, from a distance of about 71 million miles (115 million kilometers).
14 April 2015, 04:44 PM ET
Through 25 years on-orbit, the Space Telescope has repeatedly changed our understanding of the Universe. Astronaut John M. Grunsfeld, now NASA's Associate Administrator Science Mission Directorate, illuminates why we love this instrument.
14 April 2015, 02:03 PM ET
The heat is on the for the Comet 67P/ Churyumov-Gerasimenko as it sails ever closer to the sun, with the European Rosetta spacecraft snapping a stunning set of photos that the buzzing activity of the icy wanderer.
14 April 2015, 12:53 PM ET
NASA is celebrating the 25th anniversary of the Hubble Space Telescope this week, and will broadcast celebration events on Thursday (April 23) and Friday (April 24) morning.
14 April 2015, 09:55 AM ET
Ground-based and Hubble images of Pluto suggest it might be the reddest object in the Solar System. New Horizons' Principal Investigator Alan Stern explains how this could have happened.
14 April 2015, 06:47 AM ET
The dark universe is coming into view, thanks to new maps that chart the location dark matter in the cosmos. The new maps, released today, show how dark matter affects the landscape of regular matter, and provides hints about dark energy.
13 April 2015, 04:53 PM ET
A wormhole is a theoretical passage through space-time that could create shortcuts for long journeys across the universe.
13 April 2015, 03:27 PM ET
Rare tropical methane storms could help solve the mystery of how strange, giant dunes form on Titan, Saturn's largest moon, researchers say.
13 April 2015, 02:26 PM ET
Giant storms on Saturn known as 'Great White Spots' may be caused by moisture in the planet's atmosphere, researchers say.
13 April 2015, 01:01 PM ET
Liquid water likely lurks just below the surface of Mars on cold winter nights, according to new research. Is it enough to support microscopic life-forms?
13 April 2015, 07:00 AM ET
A team of scientists saw signs of rings while watching Chiron — a 145-mile-wide (233 kilometers) object that orbits between Saturn and Uranus — pass in front of a bright star, a process known as an occultation.
12 April 2015, 11:01 AM ET
About 90 employees of NASA's Jet Propulsion Laboratory in Pasadena, California, ran a marathon-length relay around the facility's grounds on Thursday (April 9) to celebrate the Opportunity rover's Mars marathon.
12 April 2015, 10:12 AM ET
A total lunar eclipse wowed skywatchers and two private spaceflight companies tackled big challenges. These, and more, are Space.com's picks for the best space stories for the week of April 12.
12 April 2015, 09:34 AM ET
From a cosmic garden to fishing for space junk, don't miss these amazing space images of the week for April 12, 2015.
11 April 2015, 01:17 PM ET
There’s real pressure on the aviation industry to introduce faster, cheaper and greener aircraft, while maintaining the high safety standards demanded of airlines worldwide.
10 April 2015, 09:36 PM ET
Albert Einstein determined that massive objects cause a distortion in space-time, which is felt as gravity.
10 April 2015, 03:53 PM ET
About 90 Jet Propulsion Laboratory employees ran 26.2 miles in relay teams. The Opportunity rover has successfully completed the length of a marathon on Mars, even though it was originally expected to only travel a half mile.
10 April 2015, 01:45 PM ET
An interview with Sam Herron, one of the co-founders of the Space Apps Challenge, a global hackathon that kicks off today (April 10).
10 April 2015, 10:27 AM ET
European Space Agency scientists recently performed tests on a projectile net that will be used to capture loose space junk.
09 April 2015, 05:47 PM ET
Black holes are some of the strangest and most mysterious objects in the universe.
09 April 2015, 04:41 PM ET
Traveling through space at 30,000 miles per hour poses some risks, which is why NASA's Pluto-bound New Horizons probe is wearing a bulletproof vest.
09 April 2015, 02:39 PM ET
NASA's Mars-studying MAVEN spacecraft notched a spaceflight milestone this week — its 1,000th orbit of the Red Planet. MAVEN arrived at Mars in September 2014 and began its yearlong prime science mission on Nov. 16.
09 April 2015, 01:47 PM ET
Now 25 years on-orbit, the Hubble Space Telescope has been used to make amazing astronomical discoveries. But the James Webb Space Telescope (JWST) will peer into the infrared universe to unravel some of humanity's greatest questions.
09 April 2015, 01:05 PM ET
A cracking fireball that exploded over Russia last year appears to share an orbit with a huge asteroid discovered in October 2014.
09 April 2015, 10:40 AM ET
Researchers at NASA's Ames Research Center in California generated three key components of RNA and DNA in the lab, by exposing commonly occurring ring-shaped molecules of carbon and nitrogen to radiation under spacelike conditions.
09 April 2015, 07:01 AM ET
Massive galaxies don't form nearly as many stars as possible due to a phenomenon known as cosmic precipitation, a new study finds.
09 April 2015, 07:00 AM ET
Researchers using the Keck Observatory spotted four fragments of an asteroid called P/2012 F5, and also determined that it completes one rotation every 3.24 hours. The space rock is thus spinning fast enough to spontaneously break apart.
08 April 2015, 01:45 PM ET
Flying twice the speed of a Space Shuttle, a collision with cosmic debris could be catastrophic. Flying twice the speed of a Space Shuttle, a collision with cosmic debris could be catastrophic.
08 April 2015, 01:01 PM ET
The protoplanetary disc around a constellation of Taurus star, named MWC 480, harbors enough methyl cyanide (CH3CN) to "fill all of Earth’s oceans," according to the European Southern Observatory.