WASHINGTON: Nasa and private sector experts now agree that a man or woman could be sent on a mission to Mars over the next 20 years, despite huge challenges.
BOSTON (Massachusetts): US astronomers looking for life in the solar system believe that Europa, one of the moons of Jupiter, which has an ocean, is much more promising than desert-covered Mars, which is currently
WASHINGTON: The Milky Way contains at least 17 billion planets the size of Earth, and likely many more, according to a study out on Monday that raises the chances of discovering a sister planet to ours.