Nasa expert reveals best way of dealing with asteroid collisions - prayer.
But did they power Neil Armstrong on moon landing mission?
Voyager 1, the space craft launched by NASA 35 years ago , may have finally left the solar system; scientists yet to confirm.
Three-man crew returns safely to Earth after 144-day mission to the International Space Station.
Study highlights danger of plants reproducing in space and warns that humans may also be at risk.
Stunning footage of Comet C/2011 L4 Pan-STARRS shot by Nasa scientist in Arizona.
Sunjammer Project is light years away, admits Nasa boffin.
After Russian meteor caused chaos and 2012 DA14 just missed earth, space agency promises 'super radar'.
Scientists at Harvard University believe data from Kepler telescope could yield clues on how planets evolve
US space agency Nasa is puzzled by unexpectedly low levels of solar activity.
Russian scientists claim to have found new form of bacterial life in waters of 17 million-year-old Antarctic lake
Video footage of meteor that exploded into fireball over skies of Russia sparks fresh riddle for ufologists.
A report published by NASA claims there is a possibility a 270m asteroid will hit Earth in a little over 50 years time
Multi-millionaire Dennis Tito, who paid an estimated $20 million to be the first 'space tourist', plans to launch a manned mission to Mars.
Astronauts fielded questions from around the world in the first live Google+Hangout web chat with Nasa.
NASA is hosting a first-of-its-kind interactive session with astronauts aboard the International Space Station (ISS)
Remote update of computer software from Houston Mission Control crashes system and blacks out crew contact.
Prospective buyers post online ads offering £10,000 for rock fragments.
$2bn mission will send Clipper to explore the buried oceans of Europa
As the 2012 DA14 became the largest asteroid to pass within 17,200 miles of Earth, scientists have warned of the danger of future impacts.
Photographs of the impact of the Russian meteorite.
Nasa sees no connection between Russian meteorite and Asteroid that raced right past Earth.