A Near-Earth Object (NEO) is categorized as an object that approaches within 1.3 astronomical units (AU) of the sun and within 0.3 AU (27.8 million miles) of Earth's orbit.
Giant dark asteroid that struck Earth 66 million years ago came from the outer reaches of the solar system's main asteroid belt and caused extinction of non- avian dinosaurs.
The new study suggested that the lush biodiversity on Earth is connected to one of the most dreaded asteroid hits ever recorded in the history of the blue planet.
The massive space rock that is being watched by the astronomers at NASA, is on the track to fly past the Earth at a speed of at least 18,000 miles per hour