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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.
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BECEP array installed at South Pole

Professor Clem Pryke and his group are on their way back to Minnesota from the South Pole in Antarctica after completing installation of the new BICEP Array Telescope. Over the next few years this specialized radio telescope will study the Cosmic Microwave Background—an afterglow from the Big Bang—looking for the imprint of gravitational waves from the beginning of time. The project, which has been several years in the making, is a collaboration between the University of Minnesota, Caltech, Harvard and Stanford.

from Astronomy News - Space News, Exploration News, Earth Science News, Earth Science https://ift.tt/38SV4VK
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