Why is outer space mysterioes
Paris. The star cluster closest to our sun is apparently being destroyed. It is torn apart by the massive influence of an invisible structure in space. The European space agency Esa announced on Wednesday. The cause for this could be dark matter, invisible to us and not yet understood in its effect.
The European space telescope Gaia has provided the relevant data. It can currently most accurately map the universe around us and has created a sky map with more than a billion stars. Gaia also sends their movement data to earth.
Tereza Jerabkova and her colleagues from Esa and the European Southern Observatory have now discovered in these data that the Hyades star cluster disappears against the star background. They calculated the events several hundred million years ago and found thousands of missing stars in new positions. They are far away in a kind of double tail.
But a lot of stars are still missing. This points to something much more powerful, which "does not just gently dissolve the star cluster," says Jerabkova. She calculated that the Hyades had simply been shattered by a gigantic force.
This would be possible through a matter cloud with ten million solar masses. The theoretically predicted subhalos of dark matter are capable of this. Science assumes that these are large lumps of a form of matter pervading the galaxy and still unknown to us.
So this could be a proof of the suspected accumulation of "subhalos of dark matter", it says in addition to the Esa. It is believed that these invisible particle clouds are relics from the time our Milky Way was formed. They could now be spread over the entire galaxy, forming an invisible substructure that would exert a noticeable gravitational influence on anything that comes too close to them.
The star cluster Hyades
The Hyades were chosen by the scientists because this is the closest star cluster to the Sun. It is located a little over 153 light-years from Earth and is easily recognizable to sky observers in the northern and southern hemisphere in a conspicuous “V” formation of bright stars. These represent the head of the Taurus in the constellation Taurus. In addition to the easily visible bright stars, telescopes can also be used to discover around a hundred fainter stars, which are located in a spherical zone in space at a distance of around 60 light years.
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