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Jellyfish have been on Earth for about 500 million years, making it the oldest creature on the planet. But now, NASA has its own "jellyfish" in space.
The government space agency said that a galaxy resembling a "jellyfish", known as ESO 137-001, with a tail consisting of long gases that spans 260,000 years- light through the space, "swim" in the view of the next James Webb of the space agency. Telescope.
"Blue ribbons of young stars hang from the galaxy disk like cosmic tentacles," NASA said. "If you look at the galaxy in X-ray light, you'll find a tail of hot gas flowing behind the galaxy.After its launch, NASA's James Webb Space Telescope will study ESO 137-001 to learn more about the gas removed from the galaxy, and why stars form in this gas tail ".
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The James Webb telescope is expected to be launched in 2021. The "jellyfish" was first observed by the Hubble Space Telescope and the Chandra X-ray Observatory in 2014.
ESO 137-001 is not very close to Earth, although its appearance resembles that of the Milky Way galaxy. It lies about 220 million light-years away from our planet and is part of the Southern Triangulum constellation and is part of a group of galaxies called Abell 3627.
This image combines NASA / ESA Hubble Space Telescope observations with data from Chandra's X-ray observatory. In addition to the electric blue ram pressure streaking strikes issued by ESO 137-001, one can see a giant gas flow extending down from the frame, only visible in the corresponding part of the spectrum X-ray. (Credit: NASA, ESA, CXC)
Clusters of galaxies are surrounded by hot gases that eventually form stars. However, the way stars are formed in the queue and the time it takes for this to happen still arouses the interest of researchers.
"Gas and dust are being removed, but how much and what happens to the removed material and the galaxy itself remain unresolved issues," said Stacey Alberts of the & # 39; 39, University of Arizona, co-investigator of the project, in a statement.
"We think it's hard to eliminate a molecular cloud that is already forming stars because it should be tightly linked to the galaxy by gravity," added Alberts. "Which means that we are wrong or that this gas was extracted and heated, but then had to cool again so that it could condense and form stars." One of the things we wish to address is to distinguish these two scenarios. "
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