<p></p> <p>NASA has selected four astronauts to train and prepare for commercial spaceflights that will return American launches to U.S. soil and further open up low-Earth orbit transportation to the private
<p style="text-align:center"></p> <p>NASA astronauts Rick Mastracchio and Mike Hopkins completed a 5 hour and 28 minute spacewalk Saturday to remove a faulty ammonia pump on the International Space Station. A second
<p>Since Europe’s Columbus laboratory module was attached to the International Space Station five years ago, it has offered researchers worldwide the opportunity to conduct science beyond the effects of gravity.</p> <p>A
<p>More than 6,300 individuals applied to become a NASA astronaut between Nov. 15, 2011 and Jan. 27, the second highest number of applications ever received by the agency. After a
<p>Thus was history made: Space Shuttle Atlantis left the International Space Station on Tuesday and made its last return to Earth today. The Shuttle era is now over and the
<p>Commercial space entrepreneurs are developing rockets that will take tourists to the moon in the not-too-distant future. But a software maker has taken a head start on the adventure by