The dipole repeller,
mysterious entity, beyond the boundaries of our galaxy, that is pushing against us with incredible force.
The name may be a bit dorky
but it's a very real thing. It's also nothing to worry about — just a normal consequence of the usual process
Beyond the Milky Way
sit a few other galaxies. There's Andromeda, 2.5 million light-years away.
Our three galaxies
and a few dozen dwarf galaxies combine to form the Local Group
The nearest big deal to our
Local Group is the Virgo Cluster, a massive ball of over a thousand galaxies sitting 60 million light-years away.
Groups and clusters have
decent, understandable definitions: They are gravitationally bound.