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.

Thursday, October 5, 2023

Arthur Eddington

Did you know?

"Whizzing around the black hole at near-light-speed, the disk heats up and blast out torrents of radiation across many wavelengths. This intense radiation across many wavelengths. This intense radiation exerts pressure that literally pushes away nearby matter, limiting how fast black holes can add mass. An object's theoretical maximum accretion rate is known as the Eddington limit, after British astrophysicist Sir Arthur Eddington (1882-1944)."

Astronomy Magazine March 2021 "How to Grow a Giant Black Hole" p. 20
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