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, June 9, 2024

Eddington Rate

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"Magnetic fields thus determine how efficiently a gram of matter radiates light as it spirals towards a black hole. A magnetic field with twist and turns will gum up the flow, causing it to heat up and emit powerful radiation that could stem the infall of material. But, says Natarajan, if the magnetic field takes a direct path and neatly threads an accretion disk, simulations suggest it can whisk material to the black hole, feeding it much faster than the Eddington rate."


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

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