Many space objects remain undiscovered and some of them pose a threat to the Earth. Astrophysicist Victor Teifel says it is time to build a special station for detection of asteroids in Kazakhstan.
Scientists have discovered a massive 200-kilometre (124-mile) impact zone in the Australian outback they believe was caused by an asteroid which smashed into Earth more than 300 million years ago.
NASA, universities and private groups in the US are working on asteroid warning systems that can detect objects from space like the one that struck Russia last week with a blinding flash and mighty boom.
A closely tracked asteroid, about 150-feet (45-meters) wide, whizzed safely past Earth on Friday, the same day a much smaller, previously undetected meteor hit Russia.
NASA is keeping close tabs on a sizable asteroid set to whiz past our planet Friday in what the US space agency says is the closest flyby ever predicted for such a large object.
Scientists said Thursday they are a step closer to proving the death blow for dinosaurs 66 million years ago was a gigantic comet or asteroid that struck near Mexico.
Hold on to your hats: an asteroid will zoom within spitting distance of Earth next week, in what NASA said Thursday is the closest flyby ever predicted for an object this large.