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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.

Strong X-ray pulsations detected from pulsar 3A 0726-260

Using AstroSat satellite, Indian astronomers have detected strong X-ray pulsations from an X-ray binary pulsar known as 3A 0726-260. The discovery, presented in a paper published April 26 on the arXiv pre-print repository, sheds more light on the nature of this poorly studied object.

from Astronomy News - Space News, Exploration News, Earth Science News, Earth Science https://ift.tt/2Wxp199

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