A mysterious intergalactic  the Milky Way

force is pushing against

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.

Fireball 10x Brighter Than  Mississippi

The Moon Streaks Over