NASA

The Endeavour crew completes the final spacewalk on the space shuttle's final mission into space, NASA reports.

The mission is complete. Astronauts on the Endeavour space shuttle has placed the final part of a robotic arm onto the International Space Station. The task was completed after logging in over 1,000 assembly hours. The final completion was 12 years in the making since the project started in December 1998. This marks the last spacewalk and flight for the Endeavour.

In December, NASA held a press conference to announce that a bacteria discovered in a salty California lake appeared to use arsenic in its DNA. But the findings ran into criticism right from the start, and now the journal Science has published the critiques of the work, as well as a response from the team that did the original work.

Images from the Endeavour space shuttle mission.

NASA Langley Research Center will outfit the Space Exploration House at the Tidewater Builders Association's Spring Homearama in Virginia Beach, May 28 - June 12.

Moon has more water than previously thought, according to a new study by NASA-funded researchers.

NASA Astronauts Mike Fincke and Greg Chamitoff aboard Endeavour space shuttle switched their suits to battery power at 12:15 a.m. EDT on Friday, signifying the start of the final of four spacewalks for the mission.

An orbiting NASA observatory has picked up signs that several stars exploded as supernovas in the last few million years, and more are coming.

NASA has said it Hubble Space Telescope has found rare, age-defying stars, the 'blue stragglers', in our galaxy.

A team of NASA-funded researchers has captured, with the help of radio telescopes, the most detailed image of particle jets erupting from a supermassive black hole in a nearby galaxy.

Gary McKinnon, a 43-year-old British computer hacker suffering from Asperger’s syndrome, who has been caught in an extradition battle between the U.S. and the UK over the last decade, suffered a setback on Wednesday when President Barack Obama said the case was now in the hands of the British legal system.

NASA is planning a mission to collect a piece of an asteroid and return it to Earth in order to discover clues to the formation of the solar system and possibly, the origins of life.

NASA announced plans launch a robot that will gather samples from distant asteroids.

Fifty years later, JFK's moon speech still holds up.

NASA has decided to cease communications with the rover Spirit today, ending a seven-year mission that was supposed to last 90 days.

Two Endeavour astronauts have completed the mission's third spacewalk.

The National Aeronautic and Space Administration (NASA) said it is working on a new capsule that will carry humans into deep space.

NASA has said it is ending its attempts to regain contact with the Mars Exploration Rover Spirit. A transmission that will end on Wednesday, May 25, will be the last in a series of attempt, NASA said in a statement on Tuesday.

NASA's sky cameras recently caught a massive meteor soaring over Georgia. Take a look of a few videos of the meteor.

After the failed doomsday prediction, a new question arises in the hearts of doomsday anticipators - is the world going to end on October 21, 2011 or December 21, 2012? The numbers sound similar, but there is quite a gap in the reasoning behind them.

NASA's satellites are at work again, getting images of the Grímsvötn volcano in Iceland from space.