Behind the Scenes at NASA's Greatest Missions | Space's Deepest Secrets | Science Channel

If the universe’s timeline was the Empire State Building, we’d only be on the 10th floor... 🌌 Professor Brian Greene breaks it down like this: each floor represents 10x more time than the one below. Ground floor = 1 year. Next floor = 10 years. Then 100. And it just keeps going. Somehow, the entire history of the universe only gets us to floor 10. So what happens on the other 92 floors? 👀 #nyc #universe #space

See a solar eclipse from space