NGC 721

NGC 721 is a barred spiral galaxy in the constellation Andromeda about 259 million ly from Earth. It spans roughly 110,000 ly, about the width of our Milky Way. It is receding from us at about 5,487 km/s.

Because its light is 259 million ly from home, you are seeing NGC 721 as it looked roughly 259 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).