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The James Webb Telescope observed three galaxies that may contain dark stars. This could help physicists explain why there are so many black holes in space.
Three American astrophysicists have already investigated the possible existence of dark stars. The birth of dark stars is driven by dark matter, say scientists. This is special, because normal stars do not contain this dark matter.
Physicists list a number of characteristics of dark stars. For example, black stars would be very old: they were probably born at the beginning of the universe.
Moreover, like other stars, they are mainly composed of hydrogen and helium, but they also contain dark matter. Additionally, they can be much larger than normal stars and emit no light because nuclear fusion does not take place.
Wat is donkere materie?
In tegenstelling tot normale materie heeft donkere materie geen interactie met het elektromagnetische veld in de ruimte. Dat betekent dat de materie geen licht absorbeert, weerkaatst of uitstraalt. Daardoor is donkere materie extreem moeilijk te herkennen.
Onderzoekers kunnen het bestaan ervan alleen afleiden uit het zwaartekrachteffect dat donkere materie lijkt te hebben op zichtbare materie.
Dark stars could age and become heavier
Scientists find these characteristics in the three galaxies spotted by the James Webb telescope. Galaxies therefore do not fit into traditional physical theories.
Nuclear fusion takes place inside normal stars. As a result, the light particles turn into heavier and heavier particles until all of the star’s hydrogen and helium are burned up.
When a star is no longer able to generate enough energy to maintain its shape, it dies and becomes a supernova or black hole. But because dark stars also contain dark matter, they become much older and therefore much heavier.
Ontvang meldingen bij nieuwe artikelen over het heelal en de ruimtevaart
Look further back in time with the James Web Telescope
The heavier a star, the more likely it is to turn into a black hole. So as dark stars age, they could potentially implode into supermassive black holes.
This would not only explain why there are so many black holes in the universe, but also why black stars have never been found until now.
These stars are said to be billions of years old and many light years away. Until the launch of the James Webb Telescope, we couldn’t go that far back in time.
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