National Aeronautics and Space Administrion

Since its inception in 1958, NASA has accomplished many great scientific and technological feats in air and space. NASA technology also has been adapted for many nonaerospace uses by the private sector. NASA remains a leading force in scientific research and in stimulating public interest in aerospace exploration, as well as science and technology in general. Perhaps more importantly, our exploration of space has taught us to view Earth, ourselves, and the universe in a new way. While the tremendous technical and scientific accomplishments of NASA demonstrate vividly that humans can achieve previously inconceivable feats, we also are humbled by the realization that Earth is just a tiny "blue marble" in the cosmos. Check out our "Thinking About NASA History" folder online as an introduction to how history can help you.

Sunday, January 26, 2025

When Black Holes Merge, Spacetime Itself Shivers



"Remember how weird black holes are? It gets weirder. Black holes can merge with one another, and because their gravities are so massive, crazy things happen. When two black holes merge, it can be felt throughout spacetime. Think of spacetime like a sheet pulled tight. Drop something on one side, and it’ll send vibrations out to the other end. This is essentially what happens to the fabric of space when black holes merge. These vibrations are really ripples that we call gravitational waves, and we’ve been able to detect many. Space is strange and incredible. There’s so much more to know, and these facts are just the start. Get out there and start exploring. Be curious. Don’t just look up, but ask questions about what you see. The only way we make scientific progress is if people keep asking two key questions: ‘how? And why?’."


https://www.highpointscientific.com/astronomy-hub/post/astronomy-101/10-astronomy-facts-every-stargazer-should-know

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