Charles Bolden made the light-hearted remarks after being questioned by a ten-year-old on Sky News.
NASA has announced that it has reached a major new milestone in its upcoming mission to explore Europa.
The new Space Launch System will enable ambitious future missions including a manned trip to Mars.
NASA Administrator Charles Bolden has outlined the space agency's plans for getting humans to Mars.
Conspiracy theorists have claimed that a huge comet will wipe out mankind at the end of September.
The space agency will be testing out its futuristic Mars landing system over Hawaii this week.
The space agency has outlined its upcoming mission to determine if Jupiter's icy moon is habitable.
The claim that a massive earthquake will hit California later on today has turned out to be nonsense.
New photographs have provided important new clues to help solve the riddle of the mystery bright spots.
An unconventional type of rover could be used to explore the oceans beneath Jupiter's icy moon.
A NASA balloon experiment has picked up sounds that wouldn't seem out of place in an X-Files episode.
After more than a decade in space NASA's Messenger spacecraft has ended its mission with a bang.
The space agency has reportedly produced a Star Trek style 'warp field' inside an experimental engine.
The space agency has formed a new coalition of scientists from a wide range of different fields.
NASA's Curiosity rover has found evidence of liquid water forming near to the planet's surface.
Chief scientist Ellen Stofan stated that we are likely to find evidence of alien life within 20 years.
NASA has revealed a partnership with the firm behind a new super-fast deep space engine.
Robotic grapples will be used to place a boulder from a large asteroid in to orbit around the moon.
A new experimental aircraft has been designed to demonstrate the viability of battery-powered planes.
NASA has revealed that the rover has found further evidence of organic molecules on the Red Planet.