The blue dots show galaxies with supermassive black holes emitting high-energy X-rays.
Black holes are definitely the loudest things in the universe in the language of X-rays. 508 more words
The Nuclear Spectroscopic Telescope Array (or NuSTAR) has captured the best high-energy X-ray view yet of a band across Andromeda, our nearest large, neighboring galaxy. The satellite has observed 40 “X-ray binaries,” intense sources of X-rays comprised of a black hole or neutron star that feeds off a stellar companion.
Andromeda (Credits: NASA/JPL-Caltech/GSFC)
While everyone else was making popcorn garlands and giving sentimental presents and eating marshmallow candies shaped like Santa, astronomers were busy too…busy scanning the Andromeda galaxy with a super powerful x-ray telescope array in space! 258 more words