Following on from a query concerning quasar mass, what fraction of matter is ejected compared to matter that is lost to the BH? Is there a graph that describes the fractions of the mass of quasars
Telescopes like Gaia measure the parallax of stars with a great precision. But for stars that are beyond 11 kpc, their parallax is still too small to be measured. With Earth-bound telescopes, only…
I imagine a situation must happen sometimes where a telescope watching a very dark object may catch a bright flash of light or a reflection off of a satellite. If that's even a concern at all (mayb…
Neutrino Dictionary of astronomy, letter N The neutrino is an elementary particle belonging to the same Electron family. As its name implies, it is a particle devoid of electric charge. As for the mass, or is null or, as most recent studies would show, it is very small, at least ten thousand times smaller than that of the electron.
I'm not referring to a star made of dark matter or a Newtonian dark star. I'm talking about a star powered by dark matter annihilation. I imagine it would form close to the centers of galaxies where
Radioactivity Astronomy dictionary, letter R Radioactivity (or radioactivity) is the natural process by which nuclei of heavy elements break down into nuclei of other lighter elements, subatomic particles and gamma rays. The phenomenon was discovered in 1896 by the French physicist Antoine Henri Becquerel, observing that uranium salts could blacken a photographic plate even if they were separated from it by a glass sheet or black paper.
