17 March 2015, 10:00 PM ET
For about 50 years, humanity has sent orbiters, probes and landers to the Red Planet. Here's a look at all of the missions to Mars to date, both the successes and the failures.
15 March 2015, 11:29 AM ET
NASA launched a new space-weather mission and scientists found evidence of a hydrothermal system on Saturn's ocean-bearing moon Enceladus. Here's a look at Space.com's top stories of the week.
14 March 2015, 12:32 PM ET
From a monster solar flare to a spectacular night launch, don't miss these amazing space images of the week for March 15, 2015.
11 March 2015, 12:33 PM ET
The world's largest solid rocket motor roared to life in Utah, but rather than lifting off the ground, the booster, laying on its side, was restrained in place as data was collected to qualify it for NASA's Space Launch System.
11 March 2015, 11:00 AM ET
NASA's new rocket, the Space Launch System, represents the most powerful rocket ever built. The rocket's booster fired in a test on March 11, 2015, in Utah.
11 March 2015, 07:03 AM ET
NASA will test-fire the booster of its Space Launch System (SLS) megarocket today at 11:30 a.m. EDT, and three astronauts will return to Earth from the International Space Station in the evening. Watch all the action live here at Space.com.
10 March 2015, 08:00 AM ET
When the world's largest solid rocket motor is ignited in Utah, it won't leave the ground, but it will fire with components that have a long spaceflight history.
09 March 2015, 05:52 PM ET
The new Space Launch System booster may look similar to the Space Shuttle boosters but its design has been overhauled for efficiency. NASA and the booster manufacturer ATK Space Systems explain.
27 February 2015, 04:30 PM ET
Why is Taurus the Bull so mad? He's being chased by bees! The Pleiades, that is. Look for Taurus, the Pleiades and many other celestial sights in the Northern Hemisphere during the winter months.
29 January 2015, 01:07 PM ET
A pairing of Venus and Mars will grace the western sky at sunset throughout February 2015. On Friday the 20th, the crescent moon joins the band. Orion and Canis Major take the stage in the southern sky. Watch for Saturn and Jupiter too.
12 January 2015, 05:23 PM ET
For the first time in more than three years, a space shuttle main engine has roared to life in support of NASA's next-generation heavy-lift rocket. The SSME, renamed the RS-25, fired Jan. 9 at Stennis Space Center in Mississippi.
12 January 2015, 11:33 AM ET
Congress mandated that NASA’s new Space Launch System must use Space Shuttle Main Engines (RS-25 ), one which fired successfully for 500 seconds at the Stennis Space Center in Mississippi on Jan. 9th, 2015.
31 December 2014, 12:22 PM ET
'Interstellar' star Jessica Chastain isn't content to explore the universe just on the silver screen. The actress appears in a new NASA video hailing the agency's efforts in space science and exploration.
30 December 2014, 03:59 PM ET
The voice of the late astronomer Carl Sagan plays over footage of the recent test flight of the Orion spaceship, in a new video by Space City Films.
12 December 2014, 09:41 AM ET
The NASA Johnson Space Center's Pathway Interns put together this video parody of Meghan Trainor’s “All About That Bass” as a public outreach for the Orion crew capsule project and other JSC-intensive programs.
10 December 2014, 05:19 PM ET
NASA's new mega rocket will probably not be launching for the first time in 2017, a NASA official said before the U.S. Congress today (Dec. 10).
10 December 2014, 08:00 AM ET
The president congratulated Orion's chief engineer and her team for Friday's successful test flight, which marked the farthest a human-spaceflight vehicle has traveled since the end of NASA's Apollo program in 1972.
10 December 2014, 08:00 AM ET
Technicians unloaded the Orion capsule from the USS Anchorage Monday night (Dec. 8) in San Diego, about 600 miles from the spot where the U.S. Navy ship retrieved Orion after it splashed down in the Pacific Ocean on Friday (Dec. 5).
09 December 2014, 06:40 PM ET
"Usually what we do isn't rocket science, unless it is", the U.S. president joked as the lead in to a congratulatory message to NASA's Orion chief engineer Julie Kramer. He made the remarks at the conference for senior leaders of the Senior Executive
09 December 2014, 01:22 PM ET
The Orion Multipurpose Crew Vehicle is NASA's planned spacecraft to take astronauts into space beyond Earth orbit. The agency plans to run the first test flight of the spacecraft in December 2014, with crewed missions possibly following in the early 2020s
09 December 2014, 07:00 AM ET
The countdown is on to the holidays! If you have a space exploration enthusiast in your life, your mission now is to find gifts that are sure to launch some holiday cheer. To help, collectSPACE.com presents five out-of-this-world gift ideas.
07 December 2014, 09:00 AM ET
Here's a look at what the future holds for Orion, the first human-spaceflight vehicle to go beyond low-Earth orbit since NASA's Apollo capsule, which flew to the moon and back in the late 1960s and early 1970s.
05 December 2014, 11:42 AM ET
05 December 2014, 08:04 AM ET
05 December 2014, 07:41 AM ET
A Canadian company wants to land a couple of robots on Mars in late 2018, but to do so, it might need your help.
05 December 2014, 01:00 AM ET
NASA will attempt to launch its new Orion deep-space capsule on Friday (Dec. 5), after a rocket glitch scrapped plans to launch the capsule on its ambitious first test flight Thursday. Watch it live here on Space.com, starting at 6 a.m. EST
04 December 2014, 01:55 PM ET
NASA’s new Orion crew capsule was built with capabilities to travel further than any humans have ever been. NASA engineer Nujoud Merancy explains explains what it can do.
04 December 2014, 01:17 PM ET
The Orion spacecraft was poised to launch Thursday to test its heat shield, parachutes and other vital spaceship functions. But a series of issues and glitches has pushed the unmanned test flight back by at least one day.
04 December 2014, 12:01 AM ET
The Orion spacecraft, a capsule destined to fly NASA astronauts on deep-space missions to asteroids and Mars, is counting down to a planned 7:04 a.m. EST (1104 GMT) liftoff on Thursday. Watch it live here at Space.com.
03 December 2014, 07:38 PM ET
Do Orion and SLS only exist to provide jobs on Earth? Is Orion a capability without a real mission? Could Orion fly atop a SpaceX booster? NASA Chief Maj. Gen. Charlie Bolden handles these and others with Space.com’s @DavidSkyBrody.
03 December 2014, 05:15 PM ET
The countdown has begun for the first test flight of the Orion Spacecraft. Here's our own by-the-numbers countdown for Orion.
03 December 2014, 12:00 AM ET
The flight will mark the farthest journey of a human-spaceflight vehicle since 1972, when the last of NASA's Apollo moon missions flew. But the agency envisions Orion eventually getting astronauts to asteroids and Mars.
01 December 2014, 03:03 PM ET
The 'dashboard' or user interface of NASA's next-generation capsule will have a digital display. The capsule will also have about 60 physical switches.
01 December 2014, 07:00 AM ET
NASA's Orion space capsule is scheduled to travel 3,600 miles from Earth on Dec. 4, then rocket back to Earth to test out a variety of systems during an unmanned flight. No human-spaceflight vehicle has traveled so far since 1972.
25 November 2014, 02:38 PM ET
The capsule will travel about 3,600 miles (5,800 kilometers) from Earth, then zoom back again at high speeds in order to test various systems, including its heat shielding and resistance to radiation.
17 November 2014, 09:16 AM ET
Don't get him angry. You wouldn't like it when he's angry! The actor and retired body builder wants you to check out the NASA spacecraft, which he describes as "leaving other spacecraft 'Green with envy.'”