NGC 1303

NGC 1303 is a lenticular galaxy in the constellation Eridanus about 255 million ly from Earth. It spans roughly 83,000 ly, about 83% of our Milky Way's width. The light reaching us tonight left it about 255 million years ago.

Because its light is 255 million ly from home, you are seeing NGC 1303 as it looked roughly 255 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).