Two astrophysicists at the Harvard-Smithsonian Center for Astrophysics have suggested a way to observe what could be the second-closest supermassive black hole to Earth: a behemoth 3 million times the mass of the Sun, hosted ...
Astronomy
Nov 28, 2022
1
294
A study led by a University of Utah astrophysicist found a new explanation for the growth of supermassive black holes in the center of most galaxies: they repeatedly capture and swallow single stars from pairs of stars that ...
Astronomy
Apr 2, 2012
4
0
A European team of astronomers led by Professor Kalliopi Dasyra of the National and Kapodistrian University of Athens, Greece, under participation of Dr. Thomas Bisbas, University of Cologne modeled several emission lines ...
Astronomy
Jul 22, 2022
1
497
When we look outward into space, we're looking backward in time. That's because light moves at the speed of light. It takes time for the light to reach us.
Astronomy
Aug 7, 2019
0
196
There's an incredibly ancient black hole out there that's challenging astronomers to explain how it could exist only 400 million years after the Big Bang. It's at the heart of a galaxy called GN-z11. Astronomers using JWST ...
Astronomy
Jan 23, 2024
7
40
Among the most fundamental questions in astronomy is: How did the first stars and galaxies form? NASA's James Webb Space Telescope is already providing new insights into this question. One of the largest programs in Webb's ...
Astronomy
Jun 5, 2023
96
238
Supermassive black holes millions to billions times the mass of our Sun lie at the heart of most, maybe all large galaxies. Some of these power brilliantly luminous, rapidly growing objects called active galactic nuclei that ...
Astronomy
Oct 11, 2011
2
0
Supernovas just might be the maid service of the universe.
Astronomy
May 26, 2015
1
892
(Phys.org) —Poring through data from a large sky survey, astronomers have found more than 100 small, dwarf galaxies with characteristics indicating that they harbor massive black holes feeding on surrounding gas. The discovery ...
Astronomy
Jan 8, 2014
22
6
Using NASA's Chandra X-ray observatory, astronomers have performed deep X-ray observations of a nearby active galaxy known as NGC 5728 and its active galactic nucleus (AGN). Results of the observational campaign, published ...
