Mysterious Midsize Black Holes Lurk at the Hearts of Tiny Galaxies
Dwarf galaxies contain less than 1 percent the mass in stars as our Milky Way does. COSMOS (short for "Cosmic Evolution Survey") characterizes these galaxies based on data from Chandra and other telescopes, which detect X-ray emissions coming from ...
What Happens When Planets, Stars And Black Holes Collide?
The Universe as we know it has been around for nearly 14 billion years: plenty of time for gravity to pull matter into clusters, clumps, and collapsed objects. By the present day, the Universe is filled with planets, stars, galaxies, and even larger ...
Astronomers discover a new way to supersize baby black holes
Just last year, three American physicists shared the Nobel Prize in Physics for their role in the historic detection of gravitational waves. The signals came from cosmic ripples in space-time created by some of the most violent events in the universe ...
Astronomers Find New Way to Supersize Baby Black Holes - D-brief
Ancient galaxies found in our cosmic neighborhood
This is where it gets tricky: although the universe had cooled down and was essentially transparent, nothing that could produce light had yet formed. There were no stars, no galaxies, maybe some primordial black holes and other structures ? but no light.
Another way for stellar-mass black holes to grow larger
The new theory starts out by noting that some supermassive black holes at the hearts of galaxies are surrounded by a disk of gas and dust. In such galaxies, there are often stars lying just outside the disk?stars that could evolve to become stellar ...
Star-Swallowing Black Holes Reveal Secrets in Exotic Light Shows
Black holes occasionally reveal themselves when passing stars get ripped apart by their gravity. These tidal disruption events ... That same month, another group announced in Science that they had discovered what may be brightest ever TDE, one that ...
Astronomers Discover Tiny Galaxy Harboring Monster Black Hole
Astronomers are accustomed to seeing supermassive black holes at the heart of large galaxies like our own Milky Way and neighboring galaxies like Andromeda. However, a new analysis suggests there's a giant black hole hiding in a most unusual place: ...
Big Think (blog)
Black holes, quasars & supernova: The most astounding phenomenon in outer space
Big Think (blog)
In the vast outreach of space, there exist cosmic events so unbelievably strange and powerful, they've changed the way we view the universe and ourselves in it. The inhuman distances make dimensional and spatial comparison difficult to accomplish. But ...
Quest for source of black hole dark matter - Phys.org
Like a game of "hide and seek," Lawrence Livermore astrophysicists know that there are black holes hiding in the Milky Way, just not where.
Galaxy outskirts likely hunting grounds for dying massive stars and black holes
Findings from a Rochester Institute of Technology study provide further evidence that the outskirts of spiral galaxies host massive black holes. These overlooked regions are new places to observe gravitational waves created when the massive bodies ...