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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.

Astronomers detect large amounts of oxygen in ancient star's atmosphere

Astronomers have detected large amounts of oxygen in the atmosphere of one of the oldest and most elementally depleted stars known -- a 'primitive star' scientists call J0815+4729. This new finding provides an important clue on how oxygen and other important elements were produced in the first generations of stars in the universe.

from Astronomy News -- ScienceDaily https://ift.tt/2RraBGp

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