ThePrintPod: Planet killer asteroid? Sure, but not today.

Among a trio of new near-earth asteroids discovered is a 1.5km rock that intersects earth’s orbit and is called a ‘planet killer’. How was it not detected all these years and what risks does it pose? In ThePrint #̦PureScience, Sandhya Ramesh @sandygrains explains. ThePrint’s Sandhya Ramesh explains.