01 July 2014, 07:45 AM ET
Starting in late 2016, Cassini will zip between Saturn and its innermost ring a total of 22 times in a mission phase now known as the "Cassini Grand Finale," which will end when the probe intentionally dives into Saturn's atmosphere in September 2017.
01 July 2014, 07:23 AM ET
A rocket that was set to loft an Earth-gazing satellite to space did not get off its launch pad in California today (July 1) due to a problem with the pad's water system.
01 July 2014, 07:00 AM ET
Cosmic impacts can create novel habitats where life can flourish and preserve the remains of pre-existing life for millions of years, new research suggests.
01 July 2014, 12:51 AM ET
This space wallpaper shows part of the 3000-metre peak of Cerro Armazones blasting away as a step towards levelling the summit in preparation for the construction of the largest optical/infrared telescope in the world.
01 July 2014, 12:36 AM ET
See photos from astronaut Alexander Gerst who is about to take off on a mission to the International Space Station, along with five others.
01 July 2014, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in June 2014.
30 June 2014, 05:47 PM ET
June 21, the day of the northern summer solstice, has much more than 15 hours of sunlight if the extensive twilight periods around dusk and dawn are taken into account.
30 June 2014, 04:27 PM ET
The nonprofit organization that has raised eyebrows with its plans to send people on a one-way mission to Mars is now accepting proposals for scientific payloads that could fly aboard an unmanned mission to the Red Planet in 2018.
30 June 2014, 03:38 PM ET
A new pair of running shoes may help you run a personal best, but a different kind of shoe could help spacefarers stay fit.
30 June 2014, 02:29 PM ET
During the Friendship 7 mission, John Glenn experiences weightlessness.
30 June 2014, 01:06 PM ET
NASA’s OCO-2 is designed to watch Earth “breathe,” exhaling, then reabsorbing CO2 as the probe maps and re-maps our planet’s surface. Humanity’s rate of carbon-loading the atmosphere is rapidly accelerating.
30 June 2014, 12:00 PM ET
SETI is stepping up its search for alien lifeforms on far off worlds. The Search for Extraterrestrial Intelligence (SETI) program recently announced two new methods to search for signals that could come from life on other planets.
30 June 2014, 11:18 AM ET
The Scorpius constellation is easy to find by its reddish star: Antares (heart of the scorpion). To its west, the M4 “Cat’s Eye” globular cluster can be found. To the east, a group of stars form the Teapot asterism.
30 June 2014, 10:29 AM ET
Saturn and Mars are visible in the evening and Venus and Mercury can be found before sunrise. At the end of the month, the annual Delta Aquarid peaks with 20 meteors per hour. -- Skywatching Guide: http://goo.gl/uETMG9
30 June 2014, 09:23 AM ET
The Low-Density Supersonic Decelerator (LDSD) was tested over Hawaii on June 28th, 2014. It successfully tested the Supersonic Inflatable Aerodynamic Decelerator (SIAD) but its second major test, the Supersonic Disk Sail Parachute, failed to deploy.
30 June 2014, 07:28 AM ET
The space agency's Orbiting Carbon Observatory-2 satellite passed its launch readiness review Sunday, meaning the craft is set to lift off Tuesday from Vandenberg Air Force Base in California at 5:56 a.m. EDT atop a Delta 2 rocket.
30 June 2014, 07:15 AM ET
NASA's Cassini spacecraft marks a big milestone today (June 30) — a decade exploring Saturn and its many moons.
29 June 2014, 09:36 PM ET
The Low-Density Supersonic Decelerator (LDSD) was tested over Hawaii on June 28th, 2014. The vehicle, testing new Mars descent and landing tech, was dropped from a balloon at an altitude of 23 miles and fired its onboard rocket.
29 June 2014, 11:14 AM ET
What was your favorite space news story of the last week?
29 June 2014, 07:50 AM ET
A humanoid robot aboard the International Space Station is inspiring technology that could be useful to both astronauts and people on Earth. Tech developed during the Robonaut program is being adapted into several spinoffs.
28 June 2014, 05:45 PM ET
The space agency launched its Low-Density Supersonic Decelerator test vehicle today from Hawaii, seeing how equipment designed to slow the descent of spacecraft through the Red Planet's atmosphere performs at high speeds in Mars-like conditions.
28 June 2014, 01:47 PM ET
From night-shining clouds to stunning images of the Milky Way, don't miss these amazing objects to watch in the night sky.
28 June 2014, 12:37 PM ET
From the true size of sun's atmosphere to a trio of huge black holes, don't miss these amazing space images of the week for June 28, 2014.
28 June 2014, 07:05 AM ET
Jupiter will end its brilliant year-long showing on Sunday evening (June 29) with a rendezvous with a young and slender crescent moon. Both objects will sit low on the horizon in the twilight sky.
28 June 2014, 01:10 AM ET
The twin telescopes at the W.M. Keck Observatory are the largest optical and infrared telescopes in the world. The telescopes are located atop Mauna Kea, a dormant volcano in Hawaii.
27 June 2014, 04:45 PM ET
The sun's volatile atmosphere is even bigger than scientists expected, a NASA spacecraft has revealed. The space agency's STEREO satellite found that the solar atmosphere, known as the corona, stretches 5 million miles above the sun's surface.
27 June 2014, 04:10 PM ET
Footage from NASA's Solar Terrestrial Relations Observatory, or STEREO, shows the mesmerizing flow of sound-like waves moving through the sun's corona.
27 June 2014, 03:49 PM ET
The Angara rocket was scheduled to blast off today (June 27) from Plesetsk Cosmodrome in northwestern Russia, but automated control systems detected a problem and aborted the launch during the final countdown, Reuters reported.
27 June 2014, 02:35 PM ET
Two American astronauts on the International Space Station got a space-based head shaving yesterday courtesy of German crewmember Alexander Gerst after the three spaceflyers went in on a World Cup wager.
27 June 2014, 01:18 PM ET
If Germany won, NASA's Steve Swanson and Reid Wiseman get their heads shaved. If USA won, ESA's Alexander Gerst gets the US flag painted on his head. Gerst's ISS'barber shop' was open for business after the game. FULL STORY: http://goo.gl/WD3mKr
27 June 2014, 12:57 PM ET
Crater Trueblood must save Earth and his girlfriend from gene-spliced hybrids. The latest installment of Homer Hickam's Helium 3 series is available on Amazon.
27 June 2014, 12:16 PM ET
The glowing Milky Way shines over Rattlesnake Lake in Washington State in this stunning image. Astrophotographer Matt Zietzke took this image from Rattlesnake Lake near North Bend, Washington on May 19, 2014.