26 March 2014, 02:00 PM ET
Astronomers have now discovered two dwarf planets — Sedna and 2012 VP113 — in the distant inner Oort Cloud, a largely unexplored region that likely hosts millions of icy objects.
21 March 2014, 03:20 PM ET
Just this week Space.com’s Facebook following surpassed the one million mark.
19 March 2014, 11:25 AM ET
Skywatchers will get a glimpse of some truly amazing night sky events in 2014, from an asteroid zooming past one of the night sky's brightest stars to amazing full moons and Martian meteor showers. See the highlights in this Space.com infographic.
17 March 2014, 10:45 AM ET
Moving masses generate waves of gravitational radiation that stretch and squeeze space-time.
17 March 2014, 10:45 AM ET
Inflation is the mysterious force that blew up the scale of the infant universe from sub-microscopic to gargantuan in a fraction of a second.
06 March 2014, 01:20 PM ET
Several of the asteroids that have been spotted passing with the orbits of the moon and even Earth's communications satellites.
27 February 2014, 01:48 PM ET
Space tourist Dennis Tito's daring proposal to send a married couple on a 501-day space flight around the planet Mars and back.
27 February 2014, 07:00 AM ET
The GPM Core Observatory scans the weather with microwaves and two bands of radar. See how the Global Precipitation Measurement Satellite by NASA and JAXA will map rain and snow like never before.
26 February 2014, 02:14 PM ET
A powerful new technique for hunting alien planets yields a major new crop of new worlds. See how it helped NASA's Kepler Space Telescope confirm the existence of 715 new alien planets to nearly double the known list of exoplanets.
21 February 2014, 06:09 PM ET
Most astronomers believe the universe began 13.8 billion years ago in a sudden explosion called the Big Bang. Other theorists have invented alternatives and extensions to this theory.
03 February 2014, 12:00 PM ET
Crushing atmospheric pressure and temperatures of hundreds of degrees make survival on Venus rather challenging. Find out why in our infographic.
29 January 2014, 01:00 PM ET
Not quite massive enough to ignite nuclear fusion, brown dwarfs may be as common as regular stars in the universe. Here's a look at how brown dwarfs may work in a SPACE.com infographic.
24 January 2014, 06:00 AM ET
For 10 years the robots have roved across Mars, making exciting discoveries about water in the planet's past.
17 January 2014, 03:34 PM ET
The two-part Rosetta spacecraft is designed to orbit and land on a comet. See how it will orbit and land on the Comet 67P/Churyumov-Gerasimenko in November 2014.
14 January 2014, 04:35 PM ET
The strange magnetic asteroid could be all that remains of what was once a protoplanet in the early solar system.
14 January 2014, 12:29 PM ET
By surrounding their star with swarms of energy-collecting satellites, advanced civilizations could create Dyson spheres.
19 December 2013, 09:43 AM ET
By keeping tabs on 1 billion stars over its five-year mission, Gaia aims to create the first accurate 3D map of the Milky Way Galaxy.
11 December 2013, 01:00 PM ET
Researchers found that habitable alien planets could exist closer to their stars than was previously realized. See how habitable zones work in this SPACE.com infographic.
10 December 2013, 10:00 AM ET
The private Mars One colony project
06 December 2013, 06:00 AM ET
China's Chang'e-3 moon lander carries a six-wheeled rover vehicle on its back. See how Chang'e 3 and the Yutu ('Jade Rabbit') rover work in this SPACE.com infographic.
27 November 2013, 12:00 PM ET
Comet ISON could become a spectacular night sky object in November 2013. Find out why here.
13 November 2013, 05:08 PM ET
Maven will orbit Mars, looking for clues about what happened to the planet's once-thick atmosphere.
23 October 2013, 01:00 PM ET
Astronomer Edwin Hubble devised a method for identifying kinds of galaxies.
14 October 2013, 07:03 PM ET
After a 300-day cruise through space, India's Mars probe will circle the planet.
10 October 2013, 02:01 PM ET
Sunlike stars eventually become a compact body called a white dwarf, destroying its planets in the process.
08 October 2013, 03:03 PM ET
An engineer suggests building a roof over a small planet so that Earthlike conditions could be maintained.
01 October 2013, 05:49 PM ET
High-speed debris from satellite explosions could cause a catastrophic chain reaction, as seen in the movie "Gravity."
21 September 2013, 07:01 AM ET
Orbital Sciences has contracted with NASA to make supply runs to the International Space Station.
20 September 2013, 05:22 AM ET
The sun's magnetic field drives changes on its surface and beyond.
16 September 2013, 05:30 PM ET
A large enough sail would provide thrust from the pressure of sunlight and, perhaps, laser light beamed from afar, allowing a probe to cover vast distances with no need for fuel.
06 September 2013, 12:09 PM ET
NASA's Lunar Laser Communications Demonstration is a novel test of next-generation communications tech. See how the system works in this SPACE.com infographic.
30 August 2013, 01:01 PM ET
In the coming decade, three enormous telescopes will come online. See how the Giant Magellan Telescope, European Extremely Large Telescope and Thirty Meter Telescope will stack up in this SPACE.com infographic.