Indian-led scientists' team discover why comet appears black
Centaurs estimated to number around 44,000 are minor planets with diameters larger than one kilometre.
Jan 25, 2016, 16:47 PM IST
NASA's Dawn mission
Centaurs estimated to number around 44,000 are minor planets with diameters larger than one kilometre.
Jan 25, 2016, 16:47 PM IST