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We call this substance dark matter, an invisible form of matter that doesn’t emit, absorb or reflect light, or interact with normal matter. It’s theorized to make up 85 percent of the universe’s total mass, or almost 30 percent of the universe’s combined mass-energy.
Sep 23, 2024 · Slatyer tries to figure out what dark matter could be made from, how it might interact with itself or anything else and, most important, the consequences of those interactions.
Apr 15, 2024 · The only rule of physics that dark matter seems to follow is gravity: It has mass, apparently, and that mass has gravity and forms a vital part of the scaffolding of galaxies, galaxy clusters,...
- Kiona Smith
Sep 3, 2009 · Dark matter is not visible, but is inferred (blue) from gravitational lensing effects; the dark matter lagged behind the other matter in the collision. The discovery in 2008, using NASA's Chandra X-ray Observatory and other telescopes, provides additional evidence for the existence of dark matter.
Jun 15, 1998 · Theoretical candidates for dark matter have been divided into two groups, dubbed MACHOs and WIMPs. The existence of MACHOs (Massive Astrophysical Compact Halo Objects) has been confirmed ...
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.
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Nov 5, 2020 · Dark matter doesn’t emit, reflect, or absorb light, making it essentially invisible to current instruments. Researchers instead infer things about dark matter through what its powerful gravity allows it to do: bend and focus the light around it, a phenomenon called gravitational lensing.
