They could get larger by colliding with other galaxies, but such collisions may not be the complete answer.

Cosmic questions that have nothing to do with stars and galaxies.

Even (so we dreamed) he might achieve intercourse with other galaxies.

Not all of these sources are identified with galaxies.

Deep sky surveys show that galaxies are often found in relatively close association with other galaxies.

Leo is a region filled with bright stars and galaxies.

A bigger, better game, played with galaxies and whole new species of adversary.

Astronomers speculate that this is due to interactions with other galaxies.

The 'bowl' of the Y is crowded with faint galaxies.

It is believed that they disappear as separate objects by merger with other galaxies.