NASA

U.S. astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko returned to Earth March 2 after spending almost a year in space in a ground-breaking experiment foreshadowing a potential manned mission to Mars.

No one doubts that space has still many well-kept secrets. One of these secrets was brought to light after 40 years in a documentary of Science Channel entitled NASA’s Unexplained Files.

The documentary revealed that in 1969 the crew of Apollo 10 heard a strange whistling sound, which sounded like music, when they were outside the range of terrestrial radio.

Scott Kelly, the US astronaut who posted twice on Greece on his twitter account ex-pressing his support and love to the Greek people, is in his sixth month on the Space Station and continues to snap photos from space. Here is a collection of some his best photos.

NASA Administrator Charles Bolden, a former space shuttle commander, said that the dream of sending a manned mission to planet Mars is closer to reality than ever before.

NASA provided us with a different angle of the moon, one we rarely have the opportunity to see from our planet, as a special camera fitted on a satellite shot the dark side of Earth’s ‘natural satellite’. The shots were taken on July 16, just as the moon was passing over the Pacific Ocean, NASA said.

NASA has extended a contract with Russia's space agency for $490 million to carry US astronauts to the International Space Station amid a lack of Congressional funding, the US agency said on August 5.

An unmanned NASA spacecraft whizzed by Pluto on July 14, making its closest approach in the climax of a decade-long journey to explore the dwarf planet for the first time, the US space agency said.

NASA launched a giant balloon June 8  carrying a kind of "flying saucer" that will test technologies for landing on Mars, but its outsized parachute only partly deployed.

The aircraft fitted with the largest parachute ever constructed -- after several days of weather-related delays -- was launched from a military base in Hawaii.    

An unmanned NASA spacecraft has crashed on the surface of the planet Mercury, after it ran out of fuel following a successful 11-year mission, the US space agency said April 30.

At least 700 photographs from NASA’s “golden era” in space exploration  are being sold by Bloomsbury Auctions in London. This includes the first “selfie” taken in space, as well as a rare image of the first astronaut to ever set foot on the Moon: Neil Armstrong.