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.

Saturday, June 14, 2025

Merge Uncertainty

"If you had asked any informed astronomer about the fate of our galaxy here in the 21st century, you would have gotten a near-universal story from practically all of them: in about four billion years, the Milky Way would merge with the only galaxy larger than itself in the entire Local Group, Andromeda. Andromeda holds the distinction of being the very first object correctly identified as being outside the Milky Way itself: when Edwin Hubble identified and measured a special class of star (Cepheid variable stars) in Andromeda back in 1923."https://bigthink.com/starts-with-a-bang/milky-way-andromeda-merger-uncertain/?utm_source=substack&utm_medium=email&utm_campaign=swab
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