Galactic Distances Explained
The galaxy spans an astonishing 100,000 light years, making interstellar travel a daunting prospect. Even at light speed, crossing the Milky Way would take 100,000 years. The sun orbits the galactic center at 220 km/second, completing a revolution every 250 million years, highlighting the immense scales of time and space involved in our universe.In this clip
From this podcast

The Science of Everything Podcast
Episode 22: Our Place in the Cosmos
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