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Massive Stars and their approximate Size

Astronomers have found massive stars in the early universe, primarily located in distant galaxies that formed shortly after the Big Bang. These regions are often studied through advanced telescopes capable of observing very distant light, such as the Hubble Space Telescope and the upcoming James Webb Space Telescope. In terms of size, these monster stars can have diameters ranging from about 100 to over 300 times that of our Sun. The Sun’s diameter is approximately 1.4 million kilometers (about 864,000 miles), so these massive stars could be approximately 140 million to over 420 million kilometers (about 87 million to 261 million miles) in diameter.

Chandra spots a mega-cluster of galaxies in the making

Astronomers using data from NASA's Chandra X-Ray Observatory and other telescopes have put together a detailed map of a rare collision between four galaxy clusters. Eventually all four clusters—each with a mass of at least several hundred trillion times that of the sun—will merge to form one of the most massive objects in the universe.

from Astronomy News - Space News, Exploration News, Earth Science News, Earth Science https://ift.tt/2JmeDuS

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