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

33K views · 512 reactions | There are big waves, and there are BIG WAVES. This moving wall of hot gas falls into the latter category — it measures 200,000 light years across (that's about twice as wide as the Milky Way galaxy), and no one has volunteered to surf it — yet. A new study has found that this cosmic tsunami, which likely formed billions of years ago, rolls through the nearby Perseus galaxy cluster. Learn more https://goo.gl/mn3GcT | Space.com | Facebook