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.

Monday, June 10, 2024

ACDM model

Did you know?


"If either the direct-collapse or super-Eddington scenario is correct, there is no need to tinker with the ACDM cosmological model. And Hennawi points out that it's not necessarily an either/or proposition. Both direct collapse and super-Eddington accretion could have been operating in the early universe, he say, Natarajan agrees."


Astronomy Magazine March 2021 "How to Grow a Giant Black Hole" pp. 16-23

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