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Cannibal stars inside the Milky Way

Astronomers have spotted the first cannibal stars ever discovered in the heart of our Milky Way galaxy, using NASA’s Hubble Space Telescope. Also known as blue stragglers, cannibal stars drain life away from other stars and seem to remain younger than the stars they destroy.

The so-called vampire stars seem to move slowly toward neighboring stars to suck in gas from them. That is why they look hotter, younger and bluer.

According to National Geographic News, cannibal stars are routinely found in dense star clusters, where stars have many chances to feed off each other.

The new discovery, however, has unveiled blue stragglers in a dense region of stars and gas surrounding the Milky Way’s center known as the galactic bulge.

“For a long time, it was suspected there were blue stragglers in the bulge, but no one knew how many there might be,” said Will Clarkson, an astronomer at Indiana University Bloomington and the University of California, Los Angeles.

“At long last, we’ve shown they’re there.”

Using Hubble to look at 180,000 stars in and near the bulge, astronomers found 42 unusually blue stars that seemed much younger than the other stars.

Researchers say 18 to 37 of these 42 stars are probably real blue stragglers that are about 10 billion to 11 billion years old. The rest might be genuinely young stars in the bulge, or stars not actually in the bulge.

Scientists also consider the possibility that the blue stragglers of the galactic bulge might have been formed by ripping hydrogen off their companion stars.

“There’s still a lot we don’t know about the details of how blue stragglers form,” Clarkson said.

“Finding them in the bulge provides another set of constraints that can help refine models of their formation.”

Main Source: http://www.presstv.ir/detail/184244.html

2 Responses to “Cannibal stars inside the Milky Way”
  1. It’s as if we are having the New Breaking Dawn with the stars also having changes .It’s wonderful to know that here are vampire stars feeding off each other to be younger .It’s very nice.

    • Salim says:

      The beauty of the Universe is more than these colors but from colors we define speed, expansion and life cycle of our own life. knowledge of color is very old than today science tech..

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