How to Find a Supernova It's easy to use astarchart to identify constellations on a cloudless night. After all, the positions of these celestial objects have been mapped for centuries. But what happens when a guest star suddenly appears among its well-documented peers? It's probably the re...
Why such destructive collapses occur, what happens afterward and how a supernova will affect the rest of its galaxy all depend on several factors that we'll discuss on the next page.
The detection of neutrinos from a supernova explosion and from the subsequent cooling of the neutron star will help determine what actually happensdoi:10.1038/scientificamerican0585-60Bethe, Hans A.Brown, GeraldScientific AmericanH. Bethe and G. Brown. How a supernova explodes. Scienti c ...
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if the supernova happens within 30 light years. 像2015lh 这样的超亮超新星 A superluminous supernova like 2015lh 比普通超新星要亮得多 is so much more luminous than a normal supernova 所以其毁灭半径也大得多 that the kill radius is much larger. ...
As often happens in science fiction, the details of how Starkiller would actually work are left to the audience's imagination. And if you've suspended disbelief and immersed yourself in the "Star Wars" fictional universe, the idea of a weapon so immensely powerful probably doesn't seem any ...
The star's core lives on as either a neutron star or a black hole, according to NASA. The last recorded observation of a supernova in the Milky Way was in 1604, yet astronomers estimate that a supernova happens once or twice a century in the galaxy. RELATED MYSTERIES —How long do ...
“pair production” happens all the time. And the electrons and positrons quickly find each other, becoming radiation again, and allowing the star to support itself. But if the cycle gets out of balance by even a tiny bit, too many pairs of particles can form. If that happens, in the ...
Gamma rays and cosmic rays are high-energy particles and radiation that originate from various sources in the universe, such as supernovae, black holes and even the Big Bang itself. Scientiststheorizethat antimatter should be as abundant as ordinary matter because of the Big Bang, but it's sc...