Single image shows 15,000 galaxies captured by NASA telescope
Astronomers using the NASA's Hubble Space Telescope have captured approximately 15,000 galaxies, about 12,000 of which are forming stars, in a single mosaic. Hubble's ultraviolet vision was used to track star-birth over the last 11 billion years, which happened about 3 billion years after the Big Bang. Hubble was launched in low-Earth orbit in 1990 and is still operational.