NASA's newest space telescope has blasted off to map the entire sky like never before. NASA’s newest space telescope rocketed toward orbit Tuesday to map the entire sky like never before — a sweeping look at hundreds of millions of galaxies and their shared cosmic glow since the beginning of time.

How Nasa’s newest space telescope will map the galaxies like never before - The $488m telescope will survey hundreds of millions of galaxies

The NASA SPHEREx telescope will use infrared instruments and a broad field of view to map the entire sky. It will observe the total cosmic glow from after the Big Bang.