Andromeda distance and future with Milky Way | Andromeda See Light From Before Humans Existed

Added: 2026-06-01

[00:00:00]Imagine looking up and catching light that began its journey 2.5 million years ago, before humans even existed. That's the Andromeda Galaxy shining from about 2.537 million light-years away. It's the farthest object you can see with your naked eye, a faint smudge carrying ancient photons across unimaginable distance.

[00:00:27]Andromeda isn't just drifting by. It's actually moving toward us. Thanks to Gaia data, there's now a 50/50 chance it will collide and merge with our Milky Way in billions of years. But a galactic collision is mostly gravitational. Stars rarely hit, but their orbits will be reshaped. Want to explore more cosmic wonders? Dive deeper at The Universe episode.