23 April 2014, 10:10 AM ET
See photos of NASA astronauts Rick Mastracchio and Steve Swanson as they spacewalk outside the International Space Station on April 23, 2014 to replace a dead backup computer on the outpost's exterior.
23 April 2014, 08:54 AM ET
Two NASA astronauts will take a short spacewalk to replace a dead computer on the International Space Station today. See how to watch it live here.
23 April 2014, 06:41 AM ET
In order for humanity to survive into the distant future, we need to visit and even colonize other worlds, according to NASA chief Charles Bolden.
22 April 2014, 04:47 PM ET
See photos of SpaceX's innovative F9R, the Falcon 9 Reusable rocket prototype, as it soars through test flights. The SpaceX F9R rocket is a Falcon 9 booster first stage equipped with landing legs and a vertical landing system.
22 April 2014, 11:02 AM ET
The M2-F3 is launched from the B-52 Mothership.
22 April 2014, 07:01 AM ET
Sending astronauts to the surface of Mars has been a longtime goal for NASA and other space exploration agencies. That Martian goal takes center stage in a Washington, D.C. conference, and you can watch it live online.
22 April 2014, 06:30 AM ET
Houston has landed a new partner in its bid to establish its own spaceport in the form of a private spaceflight company that may someday land its mini space shuttle in the city.
21 April 2014, 05:30 PM ET
NASA is developing a new spacecraft to take mankind to deep space, and high school students will have an important role in designing it.
21 April 2014, 11:14 AM ET
Were it not for John C. Houbolt, the United States might never have landed men on the moon. The engineer, who died at the age of 95, sold the nation's space program leaders on an alternate flight plan, called Lunar Orbit Rendezvous (LOR).
20 April 2014, 10:18 AM ET
A commercial Dragon cargo ship built by SpaceX made an Easter delivery to the International Space Station Sunday (April 20) to deliver tons of gear, supplies and even some treats for the astronauts on board.
20 April 2014, 06:30 AM ET
SpaceX's unmanned Dragon spacecraft launched on Friday afternoon riding a SpaceX Falcon 9 rocket to orbit. Dragon is due to be grappled by the space station's robotic arm at 7:14 a.m. EDT Sunday.
19 April 2014, 07:00 AM ET
From five volcanoes erupting at once to a cross-section of the universe, don't miss these amazing space images of the week for April 19, 2014.
19 April 2014, 07:00 AM ET
From a stunning time-lapse of the Milky Way to the Blood moon, don't miss these amazing night sky images by stargazers and Space.com readers.
18 April 2014, 07:07 PM ET
SpaceX's audacious plan to land part of a rocket in the ocean after launching it to space may not have gone perfectly, but the private spaceflight company's founder still considers it a success, one that could help lead to reusable rockets in the future.
18 April 2014, 05:01 PM ET
Skywatchers across parts of the United States and southern Canada will get an opportunity to watch as the private spaceflight company SpaceX's Dragon capsule "chases" the International Space Station across the sky.
18 April 2014, 03:35 PM ET
SpaceX's unmanned Dragon spacecraft blasted off at 3:25 p.m. EDT today from Florida's Cape Canaveral Air Force Station, riding into space atop the company's Falcon 9 rocket. Dragon is scheduled to rendezvous with the orbiting lab on Sunday.
18 April 2014, 01:40 PM ET
An astronaut evaluates the Portable Foot Restraint in space.
18 April 2014, 06:10 AM ET
Private spaceflight company SpaceX is expected to launch its unmanned cargo-carrying Dragon capsule to the International Space Station today (April 18) after multiple delays.
16 April 2014, 05:15 PM ET
When humans leave Earth to explore planets like Mars and other hostile environments in outer space, they'll need to supply their own breathable oxygen. NASA is now seeking proposals for systems to safely and efficiently regenerate air on those long trips.
16 April 2014, 12:13 PM ET
Bell Aircraft Corporation's X-1E is loaded under the Boeing B-29 mothership.
15 April 2014, 12:33 PM ET
The Tax Man cometh for Americans today (April 15), and not even astronauts in space can escape their earthly annual taxes. It's a safe bet American astronauts Rick Mastracchio and Steve Swanson on the International Space Station took care of their taxes.
15 April 2014, 11:13 AM ET
One of NASA's most historic launch pads is now under new management. Launch Complex 39A at NASA's Kennedy Space Center in Florida is now under the control of SpaceX, the company led by billionaire entrepreneur Elon Musk.
Primary Section: spaceflight
14 April 2014, 04:21 PM ET
The company's unmanned Dragon spacecraft was scheduled to blast off today at 4:58 p.m. EDT from Florida's Cape Canaveral Air Force Station. But the attempt was scrubbed because Dragon's ride to space, a SpaceX Falcon 9 rocket, sprung a leak.
14 April 2014, 12:13 PM ET
Women scientists train in the Neutral Buoyancy Simulator.
14 April 2014, 07:00 AM ET
It's an audacious plan, the odds of success are low, but SpaceX is going to do it anyway: The private spaceflight company founded by billionaire Elon Musk will launch a rocket with landing legs into orbit today, then try to bring part of it back to Earth.
14 April 2014, 01:14 AM ET
When a private spaceflight company launches its mission to the International Space Station next week it will carry some strange cargo to space.
14 April 2014, 12:01 AM ET
Private rocket company SpaceX is a leader among the new space push to send humans to orbit on commercial craft.
13 April 2014, 07:02 PM ET
Astronauts longing for fresh lettuce in orbit will soon have the chance to grow it for themselves: NASA is sending a mini-farm into space. The next SpaceX Dragon spacecraft to the International Space Station will deliver the Veggie experimental farm.
13 April 2014, 01:31 PM ET
NASA on Sunday (April 13) decided to forge ahead with the planned Monday launch of a commercial SpaceX Dragon cargo ship to the International Space Station despite a computer outage in orbit.
13 April 2014, 12:13 AM ET
What was your favorite space news story of the last week?
12 April 2014, 09:01 PM ET
From images of Europe's first earth-watching satellite launched into space to a hard-to-kill star, don't miss these amazing space images of the week for April 12, 2014.
12 April 2014, 01:43 PM ET
A backup computer outage on the International Space Station is forcing NASA to discuss plans for a possible spacewalk repair by astronauts in orbit, a move that could delay the planned Monday launch of a commercial SpaceX cargo ship to the orbiting lab.