NGC 3651 NED02

NGC 3651 NED02 is a lenticular galaxy in the constellation Leo about 355 million ly from Earth. It spans roughly 81,000 ly, about 81% of our Milky Way's width. The light reaching us tonight left it about 355 million years ago.

Because its light is 355 million ly from home, you are seeing NGC 3651 NED02 as it looked roughly 355 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).