See pic: NASA's Hubble spots blue bubble encircling Wolf-Rayet star!
Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.
Feb 27, 2016, 08:58 AM IST
Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining the rate of expansion of the universe.
Feb 27, 2016, 08:58 AM IST