24 November 2014, 10:10 PM ET
A massive population of stars is missing, and scientists are stumped as to where it could be.
24 November 2014, 10:01 PM ET
While wormholes are possible according to Einstein's theory of general relativity, it's unlikely that people will ever be able to travel through one, said renowned astrophysicist Kip Thorne of the California Institute of Technology in Pasadena.
21 November 2014, 12:10 PM ET
The sun may be partly responsible for lightning strikes on Earth, and scientists think fluctuations in the sun's magnetic field could be used to predict lightning storms weeks in advance.
19 November 2014, 06:36 PM ET
The region appears to be covered by a gray-white blanket in the image, which was captured in infrared light Tuesday morning (Nov. 18) by the National Oceanic and Atmospheric Administration's (NOAA) GOES-East spacecraft.
19 November 2014, 03:00 PM ET
The Philae lander is named for the Philae obelisk, as both are uncovering answers to ancient secrets.
19 November 2014, 02:00 PM ET
World-famous astrophysicist Stephen Hawking took to Facebook yesterday (Nov. 18) to share his views about a new film based on his life.
17 November 2014, 12:16 PM ET
The new biopic "The Theory of Everything" documents the personal life of cosmologist Stephen Hawking.
17 November 2014, 11:56 AM ET
The Leonid meteor shower of 2014 will peak on Monday and Tuesday (Nov. 17 and 18), but don't expect a dazzling celestial light show. Here's what to expect from the Leonids this year.
13 November 2014, 02:45 PM ET
The origins of organic matter found by Mars lander missions have long been debated, but a new study suggests a way to find out whether these chemicals of life came from the Red Planet or elsewhere.
12 November 2014, 01:14 PM ET
For the first time in history, a spacecraft built on Earth has softly landed on the face of a comet speeding through deep space.
11 November 2014, 08:56 AM ET
A European probe is expected to make an audacious landing on the face of a comet tomorrow (Nov. 12), and you can follow it live online starting today (Nov. 11).
11 November 2014, 02:12 AM ET
SpaceIL is hoping to not only land an Israeli craft on the moon, but also learn a bit about lunar magnetism while the lander is there.
07 November 2014, 11:52 AM ET
The European Space Agency's Gaia mission, which launched in December 2013, should find about 21,000 alien planets over the course of its five-year mission and perhaps 70,000 distant worlds if it keeps operating for 10 years, the study found.
05 November 2014, 11:44 AM ET
The Taurid meteors, sometimes called the "Halloween fireballs," are typically at their best from Nov. 5 through Nov. 12. Unfortunately, a bright moon will dampen the display this year.
05 November 2014, 11:37 AM ET
Hundreds of witnesses saw three different fireballs streak above different locations in the US, but one of them might not have been a fireball at all.
03 November 2014, 06:04 PM ET
The biggest sunspot to grace the face of the sun in more than two decades is rotating out of view, but it was responsible for kicking up some truly amazing solar activity this week.
03 November 2014, 11:50 AM ET
A rare mineral known from just three massive meteorite impacts has now turned up in a Wisconsin crater.
03 November 2014, 09:52 AM ET
31 October 2014, 04:23 PM ET
SpaceShipTwo, Virgin Galactic's passenger spacecraft, experienced an 'anomaly' during its fourth rocket-powered test flight on Friday, Oct. 31. See the latest details here.
31 October 2014, 01:55 PM ET
The Earth will never catch up to the moon (let's hope), but the number of Ordovician craters may soon takeoff. That's because it's easier and cheaper than ever to sniff out the shocked minerals that confirm an impact.
30 October 2014, 06:33 PM ET
Scientists have found evidence of water in our inner solar system 135 million years earlier than previously thought.
28 October 2014, 08:01 PM ET
An Orbital Sciences' Antares ORB3 rocket exploded during a launch attempt at NASA's Wallop Flight Facility on Oct. 28th, 2014. The spacecraft was carrying 5,000 lbs supplies, food and science experiments. Live Coverage: http://goo.gl/YhCmAu
28 October 2014, 07:15 PM ET
An unmanned Antares rocket built by the Virginia-based Orbital Sciences Corporation exploded in a massive fireball just after launch on Tuesday (Oct. 28), a shocking failure after an otherwise smooth launch countdown.
27 October 2014, 06:17 AM ET
The aurora borealis can make for a spectacular night sky show, even sometimes visible from space. Here are eight amazing facts about the northern lights.
24 October 2014, 06:31 PM ET
Gravitational waves, invisible ripples in the fabric of space and time, might be detected by looking for the brightening of stars, researchers say.
24 October 2014, 06:05 PM ET
In a harrowing plunge from the stratosphere, a Google executive broke the world record for the highest-altitude skydive today (Oct. 24).
24 October 2014, 04:15 PM ET
Stephen Hawking, the world-renowned astrophysicist and author of "A Brief History of Time," has recently joined Facebook.
24 October 2014, 03:38 PM ET
Alan Eustace dove from a high-altitude balloon soaring at approximately 135,000 feet. Felix Baumgartner held the record at 128,000 feet.
23 October 2014, 01:27 PM ET
The online Slooh Community Observatory will air a special three-hour solar eclipse webcast Thursday starting at 5 p.m. EDT (2100 GMT). You can watch the show at http://www.slooh.com, or here at Space.com, courtesy of Slooh.
20 October 2014, 02:38 PM ET
Spending long periods of time in space can be a psychologically demanding experience, but a new virtual reality system could give NASA astronauts a welcome escape.
20 October 2014, 09:29 AM ET
Warning: Do not look directly at the Sun. On October 23rd, 2014, most of the North America will be treated to the eclipse. Viewing from the eastern U.S. will be especially beautiful, weather permitting, due to it occurring at the end of the day.
20 October 2014, 02:43 AM ET
Comet Siding Spring came within just 87,000 miles of the Martian surface at 2:27 p.m. EDT today — about one-third of the distance between Earth and the moon. The comet barreled by at 126,000 mph relative to the Red Planet, NASA officials said.
18 October 2014, 09:18 PM ET
NASA scientist Dr. Michelle L Thaller tells Space.com's @MiriKramer what you need to know about comet Siding Spring's fly-by, its implications for the Red Planet and how humans will be able to observe it. Full Coverage: http://goo.gl/0cnCEb
17 October 2014, 05:05 PM ET
The top-secret nature of the X-37B missions has sparked a number of conspiracy theories. Here are some ideas about the X-37B's purpose.