Four of these novae were observed in real-time a ... the "largest-ever" image assembled of the Andromeda galaxy by the Hubble Space Telescope. The picture was captured seven years ago and ...

Due to its proximity to the Milky Way, the Andromeda galaxy appears six times the diameter of the full moon in the sky (as seen from Earth) which was a lot of "celestial real estate" for Hubble's ...