Zwicky 18 right next doors
What's amazing about Zwicky 18, a dwarf galaxy, is that it's only 45 million light years from here and yet, it's only 500 million years old. Ideal to study birth and growth of galaxies in formation with very young stars (not a single giant red star).
The HST has seen many galaxies very far away, but sometimes, early ones are very close too!
From the HST
Raoul