Search results
People also ask
Where did dark matter come from?
Who discovered dark matter?
What is dark matter & why is it important?
Is there a lot of dark matter?
Does dark matter exist in galaxies?
Why is dark matter called dark matter?
In astronomy, dark matter is a hypothetical form of matter that does not interact with light or other electromagnetic radiation. Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be observed.
Oct 1, 2024 · Dark matter’s existence was first inferred by Swiss American astronomer , who in 1933 discovered that the mass of all the stars in the Coma cluster of galaxies provided only about 1 percent of the mass needed to keep the galaxies from escaping the cluster’s gravitational pull.
- Adam Riess
- Dark matter is a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity.
- Dark matter makes up 30.1 percent of the matter-energy composition of the universe. The rest is dark energy (69.4 percent) and “ordinary” visible m...
- Two varieties of dark matter have been found to exist. The first variety is about 4.5 percent of the universe and made of the familiar baryons (i.e...
Feb 3, 2017 · The first mention. As laid out in a recent review by Gianfranco Bertone and Dan Hooper, the earliest references to dark matter only hint at the modern understanding. Toward the end of the 19th...
May 9, 2018 · Physicists and astronomers have determined that most of the material in the universe is “dark matter”—whose existence we infer from its gravitational effects but not through electromagnetic...
- Lisa Randall
- 2018
Dark matter candidates arise frequently in theories that suggest physics beyond the Standard Model, such as supersymmetry and extra dimensions. One theory suggests the existence of a “Hidden Valley”, a parallel world made of dark matter having very little in common with matter we know.
Oct 11, 2024 · Dark matter is that invisible glue that keeps stars, dust, and gas together in a galaxy. This mysterious substance makes up the majority of a galaxy's mass and forms the foundation of our Universe's structure. Dark matter is still one of the greatest mysteries of science. Credit: NASA/JPL-Caltech.
Aug 6, 2024 · Where does dark matter come from? A mysterious glow coming from the center of the Milky Way might be caused by annihilating dark matter. (Image credit: Mattia Di Mauro (ESO/Fermi-Lat))
