Find the first stars to better understand 'dark matter'

Identifying the first stars in the universe will help scientists better understand the " dark matter ", the basic element in the universe, but still contains many mysteries for astronomers.

Based on the support of supercomputers, astronomers in Durham University (UK) said dark matter, with " cold " and " hot " types, is the factor that creates stars. This conclusion has just been published in the American Journal of Science on September 14.

Finding the first stars in the universe will help decipher the mysteries of " dark matter " - (Photo: Newscientist)

After the Big Bang 13.7 billion years ago, the universe expanded very fast but it had the shape of "the surface of the lagoon" , flat with little waves. These ripple waves have gradually grown under the influence of gravity and impact on the molecules contained in " dark matter ", thereby producing the first stars of the universe about 100 million years later. Big Bang.

According to British scientists, stars born from the slow motion of " cold dark matter " seem to have become " lonely stars ". And the stars that are born in the fast motion of " hot dark matter " form " streaks " - it looks like a series of " strands of hair " suddenly glow. These " hairs " have about 9,000 light-years, about one-fourth the length of the Milky Way.

"The stars born from explosions may have lit up the dark universe when it was so spectacular," said astronomer Liang Gao of Durham University.

Based on the parameters provided by supercomputers, scientists hypothesize that stars born in the dawn of the universe may still be present in the Milky Way. If these stars are detected, the mysteries of dark matter will be revealed a lot. Supercomputers also indicate that stars born from molecules of "cold dark matter " are denser and may not live as long as stars born from " hot dark matter ".

(Photo: NASA)

TH.TU