IC 1158

IC 1158 is a spiral galaxy in the constellation Serpens about 90 million ly from Earth. It spans roughly 50,000 ly, about 50% of our Milky Way's width. The light reaching us tonight left it about 90 million years ago.

Because its light is 90 million ly from home, you are seeing IC 1158 as it looked roughly 90 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).