IC 3484

IC 3484 is a spiral galaxy in the constellation Coma Berenices about 373 million ly from Earth. It spans roughly 85,000 ly, about 85% of our Milky Way's width. The light reaching us tonight left it about 373 million years ago.

Because its light is 373 million ly from home, you are seeing IC 3484 as it looked roughly 373 million years ago. The photons left before that much of history had passed, and are only now reaching us. This distance is estimated from the galaxy's redshift, so the lookback time is approximate.

Source: structural data (position, morphology, brightness, redshift) from OpenNGC (CC BY-SA). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).