Earth’s surface may be teeming with trillions of dark matter particles

When dark matter is captured inside a planet or star, much of it sinks to the middle – but if it sometimes bounces off regular matter, there may be huge amounts of it lurking just beneath the surface

Space 27 September 2022

In November 2019, researchers were astonished when they viewed its image captured by the Hubble Space Telescope. Dark matter is an invisible substance that astronomers believe plays an important role in the formation of galaxies and is thought to comprise 85 percent of the universe?s mass. This discovery not only challenges the ideas of how galaxies form, but also provides evidence that dark matter is real. It shows that dark matter is not always coupled with regular matter in galaxies and that it has its own separate existence. In addition to lacking dark matter, galaxy NGC 1052-DF2 is an anomaly because you can see straight through it. This is called an ultra-diffuse galaxy because it has an extremely low density. As a result of these findings, a team of researchers are hunting for more dark-matter deficient galaxies to better understand the nature of dark matter and the formation of galaxies.

Dark matter could be closer to the surface of stars and planets than we thought

NASA, ESA, and P. van Dokkum

Dark matter can be trapped inside massive objects, and much of it may be closer to the surface of stars and planets than we realised. On Earth, there may be more than 10 trillion dark matter particles in each cubic centimetre of the planet’s crust.

Dark matter is a hypothetical form of matter that isn’t visible because it doesn’t seem to interact with light at all. However, it does interact with regular, or baryonic, matter …

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