30 September 2015, 11:56 AM ET
The dusty-red sphere now called Mars has fascinated stargazers since the dawn of humanity, but Earthlings' view of the planet has changed drastically over the years.
29 September 2015, 03:49 PM ET
India’s PSLV rocket on Sept. 28 placed the nation’s first astronomy satellite into a near-equatorial low Earth orbit along with six secondary payloads that included satellites owned by prospective competitors in commercial maritime surveillance.
29 September 2015, 03:39 PM ET
The Art of Ed Belbruno: Exclusive Space.com Event
29 September 2015, 02:31 PM ET
The Google Doodle for today (Sept. 29) features an adorable custom video that celebrates the recent discovery of liquid water on the surface of Mars.
29 September 2015, 01:50 PM ET
The twitter account for the upcoming movie "The Martian," due out this Friday (Oct. 2) released a very special video following NASA's announcement of liquid finding water on the surface of Mars.
29 September 2015, 01:30 PM ET
NASA's New Horizons has been squirting its recorded data (to antennas of the Deep Space Network) since the probe’s high speed flyby on 14 July 2015. Features as small as 270 yards (250 meters) across can now be discerned.
29 September 2015, 07:00 AM ET
Unusual ripples in Saturn's rings are revealing the mysterious inner workings of the great gas giant.
29 September 2015, 07:00 AM ET
A strong solar flare took out low-frequency radio communications over South America and the Atlantic Ocean earlier today (Sept. 28), and the unstable sunspot is likely to erupt again.
28 September 2015, 04:19 PM ET
Scientists have found liquid water on Mars — does it mean life can exist there, too?
28 September 2015, 03:53 PM ET
After decades of speculation, scientists now know for sure that liquid, salty water flows on the surface of Mars. See what the discovery means in our infographic.
28 September 2015, 03:13 PM ET
Mars is all the rage, but will it ever be colonized?
28 September 2015, 02:59 PM ET
Some of the best supermoon photos come from the darkest skies.
28 September 2015, 01:36 PM ET
Crackling with flares for several days, Sunspot AR2422, blew off its strongest to date on Sept. 28th, 2015. The M7-scale event "ionized the top of Earth's atmosphere," according to Spaceweather.com.
28 September 2015, 01:01 PM ET
The enigmatic dark streaks called recurring slope lineae (RSL) that appear seasonally on steep, relatively warm Martian slopes are caused by salty liquid water, researchers said.
28 September 2015, 12:30 PM ET
Recurring dark lines on slopes – seen for more than a decade in photos by Mars orbiting spacecraft – can now be positively attributed to mineral salts precipitating from liquid water.
28 September 2015, 12:02 PM ET
"The Martian" gets astronauts right, suggests AstroCritic and former ISS commander Leroy Chiao.
28 September 2015, 10:39 AM ET
Planetary scientists have determined that recurring slope lineae flowing downhill on Mars formed by the action of contemporary liquid water.
27 September 2015, 11:02 AM ET
As you watch and enjoy the total eclipse of the Harvest Full Moon, read on below to see 10 things about this shady little drama that might surprise you.
27 September 2015, 07:54 AM ET
During the total lunar eclipse tonight (Sept. 27), the full moon will shine as a traditional "harvest moon." See where the harvest moon full moon gets its name.
27 September 2015, 07:01 AM ET
To see this weekend's lunar eclipse, check out the webcast by the Slooh Community Observatory, which you can watch live right here on Space.com
27 September 2015, 06:50 AM ET
Researchers and NASA officials will unveil the discovery — which the agency described in a media advisory as a "Mars mystery solved" — during a press conference Monday at 11:30 a.m. EDT. You can watch it live here on Space.com, courtesy of NASA TV.
27 September 2015, 12:57 AM ET
The origin of life is still an unsolved riddle. How were life's building blocks first assembled?
25 September 2015, 10:26 PM ET
Earth's shadow on the moon causes a massive change in temperature on its surface. NASA research scientist Jennifer Heldmann tells Space.com's @CallaCofield about how they intend on gathering data on the Moon during the Supermoon Lunar Eclipse.
25 September 2015, 06:00 PM ET
Veteran space photographers Edwin Aguirre and Imelda Joson show ways to photograph lunar eclipses in this photo guide.
25 September 2015, 04:02 PM ET
On Sunday (Sept. 27), skywatchers across the United States have a special treat: The full "supermoon" (a full moon when the moon is closest to Earth) will go into eclipse. A lunar eclipse occurs when the moon passes into the shadow of the Earth.
25 September 2015, 03:21 PM ET
If there’s one thing we’ve learned from NASA’s New Horizons flyby on July 14, it’s that we have a really incomplete understanding of planetary evolution. And now, in a new image release by the Pluto mission, there’s yet another landscape (actually, landsc
25 September 2015, 02:54 PM ET
What should observers expect to see happen during Sunday night's total lunar eclipse? Check out our guide to find out!
25 September 2015, 11:00 AM ET
The new Hubble photos, which researchers combined into several videos, show the Veil Nebula, a colorful cloud of material 110 light-years wide that lies about 2,100 light-years from Earth in the constellation Cygnus (The Swan).
25 September 2015, 07:00 AM ET
The supermassive black hole at the heart of a recently discovered galaxy called SAGE0536AGN is about 30 times larger than it should be, and astronomers don't know why.
24 September 2015, 05:32 PM ET
The Hubble Space Telescope's Wide Field Camera 3 has returned incredible imagery of the supernova remnant locoed 2100 light-years away in the Cygnus constellation. A comparison of imagery from 1997 shows that the gas filaments have moved.
24 September 2015, 02:25 PM ET
Two black holes, circling one another on their way to merging together, can create ripples in spacetime, but the waves are weaker than previously thought.
24 September 2015, 12:23 PM ET
Now that we've seen the diverse landscapes on Pluto, what does it all mean?