Each one thousands to hundreds of thousands of light years across, and with millions of light years between them.
Each galaxy having a few thousand to millions of stars (for a dwarf galaxy), to 100-400 billion stars for a spiral galaxy like ours, to about a trillion stars for large ellipticals like Andromeda.
Kind of a lot.
alt Hacker News
Each galaxy having a few thousand to millions of stars (for a dwarf galaxy), to 100-400 billion stars for a spiral galaxy like ours, to about a trillion stars for large ellipticals like Andromeda.
Kind of a lot.