12 August 2015, 06:56 AM ET
Contamination of samples collected by NASA's Mars 2020 rover is all but certain, so scientists must determine just how clean they can feasibly be kept.
12 August 2015, 03:29 AM ET
The public can now vote on a shortlist of proposed common names for 32 exoplanets, as well as most of their host stars, in the International Astronomical Union's "NameExoWorlds" competition.
12 August 2015, 12:53 AM ET
A super-Earth is an extrasolar planet that is close to Earth's size and mass, but does not have the mass of a gas giant.
11 August 2015, 03:46 PM ET
More than 6,000 'Star Trek' fans are now part of a giant online tribute to Leonard Nimoy, who played the Vulcan alien Spock on the famed series.
11 August 2015, 07:30 AM ET
The space agency just opened the latest round of its Cubesat Launch Initiative, which provides rocket rides for tiny spacecraft developed by researchers at NASA, academic institutions and nonprofit organizations.
11 August 2015, 07:23 AM ET
Today, the International Astronomical Union will announce the results of its "Name the Exoworlds" campaign, which asked the public to vote on names for 32 alien planets in 20 different star systems.
10 August 2015, 10:10 PM ET
Rocky surfaces and molten cores are what the four inner planets of the solar system have in common
10 August 2015, 05:15 PM ET
The resulting radar images, which researchers combined into an asteroid flyby video, show that the asteroid, known as 1999 JD6, is a "contact binary" consisting of two lobes joined together.
10 August 2015, 04:57 PM ET
The slow death of the universe was revealed in 21 wavelengths, as scientists map the energy of a nearby region of space.
10 August 2015, 04:00 PM ET
A study of 200,000 galaxies has revealed that the Universe generates about half as much energy as it did 2 billion years ago. The Galaxy and Mass Assembly catalogue is accurately depicted in this visualization.
10 August 2015, 12:15 PM ET
The first Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope is now in operation on Haleakala – on the Hawaiian Island of Maui. ATLAS is an asteroid impact early warning system being developed by the University of Hawaii and funded by NASA.
10 August 2015, 06:57 AM ET
As particles race around Saturn at breakneck speeds, their jostling and crashing may look random and haphazard — but a new mathematical theory brings a simple kind of order to the chaos that will help scientists understand rings across the universe.
10 August 2015, 06:50 AM ET
New "Marstronauts" will head to a Hawaiian simulation facility for a year, starting Aug. 28. Officials with the Hawaii Space Exploration Analog and Simulation (HI-SEAS) mission announced the selection of the six scientists on July 29.
10 August 2015, 06:16 AM ET
Some scientists theorize that our universe is fake, and we are all living in an alien simulation. Do you think all of human existence is merely an epic computer simulation?
09 August 2015, 10:35 AM ET
NASA needs your help to bolster current earthquake detection technologies, and they’re offering $25,000 to the team that develops the best way to detect an oncoming quake.
08 August 2015, 08:44 AM ET
An unusual kind of observatory is opening a new lens to the universe.
07 August 2015, 10:56 PM ET
Astronomers found the most far-flung galaxy ever discovered, NASA's Curiosity rover celebrated three years on Mars and Europe's Rosetta mission marked one year in orbit around a comet. Here are Space.com's top stories of the week.
07 August 2015, 05:56 PM ET
By studying how plants react to life in space, we can learn more about how they adapt to environmental changes.
07 August 2015, 05:15 PM ET
NASA's NEOWISE mission has tracked down an elusive family of asteroids that shun regular orbits in the asteroid belt, instead preferring a crazy roller coaster ride through the solar system's equatorial plane.
07 August 2015, 01:40 PM ET
Ceres, a dwarf planet that lies between Mars and Jupiter, appears to have significantly fewer craters on its surface than expected — now scientists have to figure out why.
07 August 2015, 12:42 PM ET
About a third of our Milky Way's stars have migrated far from their birth-places. Astrophysicists, using the Apache Point Observatory's Galactic Evolution Explorer spectrograph, profiled the chemical signatures of 146,000 stars.
07 August 2015, 09:45 AM ET
Astronomers have announced the discovery of a truly monstrous structure consisting of a ring of galaxies around 5 billion light-years across — and it defies cosmological theory.
06 August 2015, 08:51 PM ET
A comet carrying a robotic hitchhiker is barreling toward its closest approach to the sun next week, and you can learn about the icy wanderer's highly anticipated "perihelion passage" during a webcast early Saturday morning (Aug. 8).
06 August 2015, 02:30 PM ET
With or without 3D glasses, a newly released video tour of Ceres offers a new perspective on the dwarf planet's dramatic and diverse surface.
06 August 2015, 01:36 PM ET
Africa looked awash in splotches of dusty pink, vibrant green and a swirl of white clouds in an image snapped Tuesday (Aug. 4) by Europe's newest weather satellite, according to an announcement from the European Space Agency.
06 August 2015, 11:23 AM ET
Scientists remain puzzled as to the composition of bright material on a tall cone-shaped peak, as imaged by NASA’s Dawn spacecraft. The mountain is odd in that it is not the central spire of a crater.
06 August 2015, 07:04 AM ET
While it's not quite beaming onto a spacecraft, a "Star Trek" celebrity will take part in a special NASA flight to observe the universe.
06 August 2015, 07:00 AM ET
Here's a rundown of the six exoplanets NASA regards as the most Earth-like alien worlds discovered to date.
06 August 2015, 07:00 AM ET
One year ago today (Aug. 6), Europe's Rosetta spacecraft slipped into orbit around a comet and began making observations that would reshape researchers' ideas about these icy leftovers from the solar system's early days.
06 August 2015, 12:05 AM ET
The Deep Space Climate Observatory spacecraft recently caught the moon crossing Earth's face in a stunning video that shows off the mysterious lunar far side.