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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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Astronomers take first, high-resolution look at huge star-forming region of Milky Way

A team of astronomers used a newly commissioned radio telescope in South Korea to make the first high-resolution observations of the molecular clouds within a star-forming region of the Milky Way. The first good look at the galactic region indicated large molecular clouds about 180 light years across with a mass equal to about 100,000 masses of our sun.

from Space & Time News -- ScienceDaily http://bit.ly/2DfbREJ
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