Facts about Dark Matter

1. 11

   Galaxy cluster simulations from the 1990s revealed that dark matter clumps form along cosmic web filaments, concentrating matter in ways that normal physics alone cannot explain.

   Dark MatterJul 15sharecosmologysimulationstructure
2. 10

   Underground detectors like LUX and XENON have achieved sensitivities capable of detecting a single WIMP collision with a xenon nucleus, yet remain silent after years of observation.

   Dark MatterJun 16sharephysicsexperimentdetection
3. 09

   Observations of stellar kinematics in dwarf galaxies suggest dark matter could constitute up to 98 percent of their total mass, making these galaxies laboratories for studying dark matter's dominant gravitational effects.

   Dark MatterMay 14shareastronomyobservationmeasurement
4. 08

   Computer simulations suggest dark matter halos surrounding galaxies extend up to 10 times farther than visible matter, creating massive invisible spheres reaching hundreds of thousands of light-years outward.

   Dark MatterMay 14shareastronomysimulationstructure
5. 07

   Cold dark matter simulations from the 1980s onward predicted galaxy distributions matching observations only when dark matter comprised roughly 90 percent of matter in cosmic structures.

   Dark MatterMay 14sharecosmologysimulationstructure
6. 06

   Axions, hypothetical particles a trillion times lighter than electrons, represent an alternative dark matter candidate that could be detected using specially designed microwave cavity experiments.

   Dark MatterMay 14sharephysicsparticledetection
7. 05

   Gravitational lensing observations around galaxy clusters like the Bullet Cluster in 2006 demonstrated that dark matter and normal matter behave as separate entities during cosmic collisions.

   Dark MatterMay 14shareastronomyphysicsobservation
8. 04

   Weakly interacting massive particles, or WIMPs, remain the leading theoretical candidates for dark matter despite decades of direct detection experiments yielding null results.

   Dark MatterMay 14sharephysicsparticlecosmology
9. 03

   In 2015, the Planck satellite mapped cosmic microwave background radiation to determine that dark matter comprises 26.8 percent of the universe's total mass-energy content.

   Dark MatterMay 14shareastronomymeasurementspace
10. 02

    The rotation curves of galaxies observed in the 1970s by Vera Rubin provided the first compelling evidence that dark matter comprises most of the universe's mass.

    Dark MatterMay 14shareastronomyhistoryobservation
11. 01

    Approximately 85 percent of all matter in the universe consists of dark matter, a mysterious substance that neither emits nor absorbs light.

    Dark MatterMay 13shareastronomyphysicsmeasurement