IC 3505

IC 3505 is a barred spiral galaxy in the constellation Coma Berenices about 644 million ly from Earth. It spans roughly 160,000 ly, about 1.6 times the width of our Milky Way. The light reaching us tonight left it about 644 million years ago.

Because its light is 644 million ly from home, you are seeing IC 3505 as it looked roughly 644 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).