milky way | Isaac Arthur

How Many Alien Civilizations Could Exist In One Galaxy?

What if millions of alien civilizations exist… but never meet? The galaxy may be full of life—and still feel completely empty. The real Fermi Paradox might be distance. 🚀 Join this channel to get access to perks:...

Is Our Galaxy Going To Collide With Andromeda?

We often hear that our galaxy will collide with the Andromeda Galaxy, our nearest neighbor, but in reality this is just the biggest of many titanic galactic mergers to come. Intergalactic Voyages: https://youtu.be/6aBfLA_g3og Produced, Written & Narrated by: Isaac...