Join up for the Mars Society's next mock missions to the Red Planet. Read more…

NASA officials will hold a media teleconference Thursday, Oct. 18, at 4 p.m. EDT in advance of the World Radiocommunication Conference 2007 in Geneva, Switzerland. Read more…

NASA has launched a user-friendly Web site designed to connect media with Earth science experts from across the agency. Read more…

The NASA Research Announcement was amended to solicit proposals that address NextGen or the "Integration of Advanced Concepts and Vehicles into the Next Generation Air Transportation System." Read more…

NASA managers have scheduled a news conference at the Kennedy Space Center, Fla., no earlier than 3 p.m. EDT, Tuesday, Oct. 16, to discuss the status of the upcoming space shuttle mission. Read more…

NASA and the Smithsonian Institution's Center for Folklife and Cultural Heritage are partnering for the 2008 Smithsonian Folklife Festival. Read more…

NASA has selected 120 proposals for negotiation of Phase 2 contract awards in the Small Business Innovation Research program, known as SBIR. Read more…

Expeditions 15 and 16 will discuss their missions during a news conference aboard the International Space Station at 7 a.m. CDT, Monday, Oct. 15. Read more…

NASA's Stratospheric Observatory for Infrared Astronomy, known as SOFIA, began a series of flight tests Thursday of the highly modified Boeing 747SP aircraft. Read more…

NASA astronaut Peggy Whitson arrived at the International Space Station Friday to begin her tenure as the first woman to command a station mission. Read more…

International Space Station Flight Director Derek Hassmann will be available for satellite interviews from 6 to 8 a.m. CDT Friday, Oct. 19. Read more…

NASA is extending, for a fifth time, the activities of the Mars Exploration Rovers Spirit and Opportunity. Read more…

New images bring Pluto and its moons into sharper view. Read more…

The decision could keep the robotic Martian explorers active through 2009. Read more…

Fifty years after Sputnik, astronauts look back on spaceflight's impact. Read more…

A space rock lost four decades ago has resurfaced. Read more…

NASA celebrates 50th anniversary with 'America in Space.' Read more…

Sputnik changed how scientists in every discipline did science. Read more…

NASA's Dawn spacecraft is on its way to study a pair of asteroids after lifting off Thursday from the Cape Canaveral Air Force Station at 7:34 a.m. EDT. Read more…

NASA-funded astrobiologists have found evidence of oxygen present in Earth's atmosphere earlier than previously known, pushing back the timeline for the rise of oxygen in the atmosphere. Read more…

The seven space shuttle Endeavour astronauts who returned to Earth last month will share mission highlights at the agency's headquarters on Oct. 2 at 10 a.m. EDT. Read more…

Starting Oct. 1, NASA Television and the agency's Internet homepage will commemorate the 50th anniversary of the Space Age, which began with the launch of Sputnik I on Oct. 4, 1957. Read more…

NASA has awarded a contract modification to the European Space Agency's Space Technology Center for additional engineering services for the ISS Node 2 and 3 modules. Read more…

NASA has selected Powertek Corporation of Fairfax, Va., to provide financial support services at NASA's Ames Research Center, Moffett Field, Calif. Read more…

Space shuttle Discovery is scheduled to roll out to Launch Pad 39A at NASA's Kennedy Space Center, Fla., on Saturday, Sept. 29, as preparations for the STS-120 mission move forward. Read more…