NGC 755

NGC 755 is a barred spiral galaxy in the constellation Cetus about 77 million ly from Earth. It spans roughly 64,000 ly, about 64% of our Milky Way's width. The light reaching us tonight left it about 77 million years ago.

Because its light is 77 million ly from home, you are seeing NGC 755 as it looked roughly 77 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). Recession velocity from RC3 (de Vaucouleurs et al. 1991, via NASA/HEASARC, public domain). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).