Laurence A. Marschall is Professor of Physics at Gettysburg College and the editor of CCD Astronomy. He is a contributor to
The Sciences,
Astronomy,
Harper”s,
The New York Times Book Review, and
Air and Space.
4 电子书 Laurence A. Marschall
Laurence A. Marschall: The Supernova Story
Astronomers believe that a supernova is a massive explosion signaling the death of a star, causing a cosmic recycling of the chemical elements and leaving behind a pulsar, black hole, or nothing at a …
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