Analysis of data from 600 Martian days of observation shows methane signatures.
Cell membrane made of nitrogen, carbon and hydrogen can survive in methane-rich atmospheres as on Titan.
Drake is against sending out signals to aliens because 'they have been watching us for years'.
Massive black hole powering brightest object in early universe.
Biggest solar eclipse for 16 years to take place on 20 March, blocking 90% of the sun's light.
At a million km closer to the sun than Mercury, the loner comet's fate as it goes around the sun is unsure.
Phlegra Montes range in northern hemisphere shows features indicative of past glacial activity.
New York professor says dark matter interactions could be responsible for mass extinctions.
Star came within 0.8 light years of Earth passing through the Oort cloud, scientists say.
Scientists unable to find brown dwarf that should be orbiting pair of stars V471 Tauri.
Scientists baffled by gigantic cloud which twice appeared over Mars for long periods in 2012
The computer code used to generate the clear, multiple images in the film throw light into the visuals near a black hole.
The stage is now set for ATV's successor which will play an important role in future space flights.
The 25-year-old snap taken by Voyager 1 showed the Earth as a pale blue dot in the vastness of space.
Sending out a message instead of waiting for one may not be a wise thing to do and requires discussions, say critics.