Lasers powered by sun could protect Earth from any threatening-looking asteroids by destroying them before they can get too close, U.S. researchers have suggested.
As an asteroid readies for a fly-by of Earth on Friday, two California scientists have proposed a system that could eliminate a threat of this size in an hour.
Day in Pics: 29th March
Showbiz World - March 29, 2015
Cricket World Cup: Team India members return home