325K views · 12 reactions | When we talk about the enormity of the cosmos , it’s easy to toss out big numbers – but far more difficult to wrap our minds around just how large, how far, and how numerous celestial bodies really are. Join us for a cosmic journey to see the size of our Milky Way galaxy: https://go.nasa.gov/2UxkHIN | NASA - National Aeronautics and Space Administration | Facebook

18K views · 179 reactions | What does a prolonged stay in space do to the human body? Discover how space travel affects an astronaut’s body, and the risks scientists take in journeying to space: | TED-Ed | Facebook