Space.comTopic:
Fifty Years of Human Spaceflight
Human spaceflight has come a long way over the last 50 years since the launch of cosmonaut Yuri Gagarin on April 12, 1961 during the Vostok 1 mission. SPACE.com looks at just how far spaceflight has come and what's on the horizon.
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See images of 3D printing, which could be used in building a future lunar base.
On the 10 year anniversary of the Columbia shuttle disaster, NASA remembers.
On the 10th anniversary of the Columbia accident, Obama paid tribute to its fallen crew.
See photos of NASA's 2013 memorial to the astronauts lost in the Columbia shuttle disaster and other space tragedies.
See how the Columbia shuttle accident of Feb 1, 2003, occurred in this SPACE.com infographic.
See SPACE.com's look at the Columbia shuttle disaster 10 years later here.
The tragedy reminded NASA and the nation just how tough it is to explore the final frontier.
See photos from STS-107, the tragic final flight of the space shuttle Columbia in early 2003.
See the brave men and women who made the ultimate sacrifice for space exploration during history's worst spaceflight disasters.
Future spaceflight accidents may not be inevitable, but they're not entirely preventable either, experts say.
See photos of solar sails, real and imagined, and its potential for future space exploration.
The Dream Chaser will fly solo for the first time in six to eight weeks.
Israel's first astronaut, Ilan Ramon, carried a Torah scroll with him to space.
Roundworms, or nematodes, made it through with only a little heat damage, scientists say.
Mars One will use the money to fund conceptual design studies and its astronaut selection process.
NASA has lost 17 astronauts in three space disasters, and Russia four cosmonauts. Is it worth it?
Lessons learned from Columbia have played a large role in the design of Orion.
A look at a few of the animals who paved the way for humans in space.
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