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 19, 2025

The Vast Majority Of Matter in the Universe is Invisable

The Vast Majority Of The Matter In The Universe Is Invisible To Us"There’s a lot of stuff in the universe, and all that stuff is helping the universe expand. The problem is, we’ve accounted for all the matter we can see (stars, galaxies, etc.). Yet somehow, all of it doesn’t add up to the amount we need for the expansion we’ve observed. What gives? Scientists have cleverly named this missing matter “dark matter” since we can’t see it, but are pretty sure it has to be there. It should account for about 85% of all the matter in the universe. That’s a lot of matter that’s missing."https://www.highpointscientific.com/astronomy-hub/post/astronomy-101/10-astronomy-facts-every-stargazer-should-know
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