02 June 2015, 01:34 PM ET
Paving the way for Apollo's missions to the moon, the Gemini program provided much-needed experience for astronauts in space.
02 June 2015, 12:45 PM ET
While NASA does not yet have specific plans for human missions beyond 2021, the agency is in the early stages of developing a sequence of missions in cislunar space in the 2020s to prepare for later missions to Mars.
02 June 2015, 12:26 PM ET
When Alexei Leonov stepped out of his Voskhod 2 capsule on March 18, 1965, he became the first spacewalker ever.
02 June 2015, 12:08 PM ET
NASA astronaut Ed White became the first American astronaut to walk in space on June 3, 1965, during the Gemini 4 mission. See photos from White's historic spacewalk.
02 June 2015, 11:07 AM ET
NASA is celebrating the first U.S. spacewalk 50 years ago with a new documentary on the history of humans working in their own private human-shaped spacecraft. 'Suit Up' is narrated by actor Jon Cryer and recounts five decades of spacesuit technology.
02 June 2015, 06:14 AM ET
NASA's Low-Density Supersonic Decelerator project will test new technologies for landing future robotic and human Mars missions, and returning large payloads to Earth.
02 June 2015, 06:00 AM ET
NASA Administrator Charles Bolden said he'd like to cut in half the travel time required to send astronauts to Mars. Doing so will require advanced propulsion technologies — including, perhaps, nuclear rockets, Bolden said.
01 June 2015, 05:30 PM ET
Borg-like assimilation may not be an interstellar reality, but having a resilient software system is essential to ensure your starship can cope with any scenario in the depths of space.
01 June 2015, 02:36 PM ET
Astronaut Ed White became the first American to walk in Space on June 3rd, 1965. He flew on the Gemini 4 mission with astronaut Jim McDivitt
01 June 2015, 11:12 AM ET
A quarter century after its founding, the U.S. Astronaut Hall of Fame is being re-launched as a high-tech attraction designed to inspire the next generation of explorers. Heroes and Legends will open at Kennedy Space Center in Florida in 2016.
01 June 2015, 10:34 AM ET
r: Hundreds of people came to see four space shuttle veterans be enshrined into the U.S. Astronaut Hall of Fame — and help celebrate the anniversary of the first astronaut couple. The new inductees were hailed as heroes.
01 June 2015, 07:40 AM ET
NASA has awarded Boeing with the first order for a commercial crew change flight to the International Space Station once the company's new CST-100 space taxi is ready for manned flights in 2017.
01 June 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in May 2015.
31 May 2015, 07:00 AM ET
NASA announced the science instruments for its mission to Europa, SpaceX was certified for U.S. military launches and a tiny solar-sailing spacecraft suffered a glitch in orbit. Here's a look at Space.com's top stories of the week.
30 May 2015, 11:13 AM ET
From a nebula's crimson heart to a dragon's-eye view, don't miss these amazing space images of the week for May 31, 2015.
29 May 2015, 03:26 PM ET
Virgin Galactic's second SpaceShipTwo passenger ship is coming together, with the commercial spaceliner lowering its landing gear for the first time last week.
29 May 2015, 02:30 PM ET
The Hubble Space Telescope has been wowing space fans with amazing cosmic views for 25 years, but only because of repairs and upgrades by visiting astronauts. See the tools astronauts used to fix and repair the Hubble Space Telescope.
29 May 2015, 02:00 PM ET
NASA engineers talk about the specialized tools they developed to keep Hubble running for a quarter of a decade.
28 May 2015, 05:45 PM ET
NASA has awarded prize money to five members of the public for their ideas about how to limit astronauts' radiation exposure during journeys through deep space.
28 May 2015, 01:36 PM ET
Astronauts on the International Space Station moved a closet-like storage module to a new spot on the orbiting lab Wednesday (May 27) to make room for a new docking port to welcome private space taxis in 2017.
28 May 2015, 08:00 AM ET
It is a sight no one thought possible again: a complete NASA space shuttle standing vertical as if poised for launch. But that's exactly what the California Science Center will do. NASA's last shuttle fuel tank is headed to L.A.
28 May 2015, 07:48 AM ET
The 2-minute video integrates footage taken by cameras aboard Dragon during its key launch-escape test, showing key events such as parachute deployment up close — and providing great Dragon's-eye views of the Space Coast landscape.
27 May 2015, 06:28 PM ET
If the private space company’s Falcon booster were to fail, Dragon showed it can blast astronauts to safety during this test of May 8th, 2015. The capsule kicks from 0-100 MPH in 1.2 seconds – about 4G of acceleration.
27 May 2015, 09:23 AM ET
On March 28th, 2015, the Soyuz TMA-16M (Expedition 43) mission docked with the ISS. A camera aboard the spacecraft captured the rendezvous and docking.
26 May 2015, 07:40 PM ET
Flight controllers will robotically move the Permanent Multipurpose Module from the orbiting lab's Unity module over to the Tranquility module. You can watch live here at Space.com beginning at 8 a.m. EDT Wednesday, courtesy of NASA TV.
26 May 2015, 04:30 PM ET
Science experiments done in microgravity or related to space flight can be found in a new scientific journal dedicated to these areas of research.
26 May 2015, 11:23 AM ET
The Permanent Multipurpose Module (PMM) will be moved to a nearby port to create a spare docking port for United States commercial crew transport by SpaceX, Boeing and possibly others in the future.
26 May 2015, 07:12 AM ET
The House of Representatives passed a bill with a number of commercial space policy provisions May 21, despite objections from some Democratic members.
24 May 2015, 09:01 AM ET
The U.S. Air Force's X-37B space plane launched on another mystery mission, Russia's Proton rocket failed during a satellite launch and astronomers found the most luminous galaxy in the universe. Here's a look at Space.com's top stories of the week.
23 May 2015, 07:00 AM ET
From the launch of the U.S. Air Force's X-37B space plane to new views of the odd bright spots on the dwarf planet Ceres, don't miss these amazing space images of the week for May 23, 2015.
22 May 2015, 10:34 AM ET
A manned mission to Pluto may be far out, but it's not impossible.
21 May 2015, 01:00 PM ET
SpaceX's unmanned Dragon spacecraft splashed down today in the Pacific Ocean off the coast of Baja California at 12:42 p.m. EDT (1642 GMT), about 5 1/2 hours after departing the orbiting lab.