The threat posed by the space rock, estimated to be between 40 and 90 metres in diameter, is the highest ever recorded for an ...
SYDNEY, Feb. 20 (Xinhua) -- Australian paleontologists have discovered the first fossil evidence of a predatory dinosaur species that roamed the continent over 100 million years ago.
YR4 has a 2.8% to 3.1% chance of hitting Earth in 2032. Astronomers are tracking it to refine estimates of its size and orbit ...