Exoplanets are the best hope for finding life away from Earth
New suggested definition no longer requires orbiting the sun
'For the first time in human history, we can actually build the missions that could go out and answer this fundamental question of whether or not biology works beyond Earth'
Data rescue meet-ups are scheduled around the US
President Trump is expected to shift Nasa away from doing any of its work in tracking and responding to climate change and global warming – and instead focus on heading to deep space
Dr Gavin Schmidt, director of Nasa’s Goddard Institute of Space Studies, describes suggestions that climate change had slowed down or stopped as ‘delusional’ and ‘bunk’
Professor Gabi Hegerl, a climatologist named as one of the world’s most influential scientific minds, says things are ‘getting tight’ for efforts to prevent dangerous global warming
The former fighter pilot predicted that others would soon follow him
But too far away to pose a threat, say researchers
Newly-discovered comet C/2016 U1 has an orbit that takes millions of years - meaning this might be the only time it can be spotted without a telescope
'Everyone was stunned to see snow falling in the desert' says photographer, in hot, dry town where snow almost never falls
Dr Sellers had dreamed of going into space ever since he saw images of Russian cosmonaut Yuri Gagarin orbiting the Earth in 1961
Google Doodle celebrates the 340th anniversary of early experiment to estimate the speed of light
Soyuz rocket was carrying two and a half tonnes of food and supplies when it blasted off from the Baikonur Cosmodrome in Kazakhstan
Sir Richard Branson wants to bring back supersonic travel. Thirteen years since Concorde ended operations, the Virgin tycoon has revealed the prototype design for a new generation of supersonic business jets developed by the Branson-backed startup company Boom, based in Denver. The firm claims its planes will allow “affordable” journeys from London to New York in just three-and-a-half hours for approximately $5,000 (£4,000) return, the same as current business class tickets.
The image is just the result of an error on the spacecraft that took the pictures