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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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SOFIA in Stuttgart: First scientific research flight over Europe

On 16 September 2019 at 04:14 CEST, the Stratospheric Observatory for Infrared Astronomy (SOFIA) is expected to land at Stuttgart Airport. The airborne observatory is a joint project by the US space agency NASA and the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR). SOFIA is scheduled to take off from Stuttgart at 19:40 CEST on 18 September for its first scientific research flight over Europe, during which it will fly over 12 countries. The idea behind this is that, during its European mission, SOFIA will fly much farther north than it is able to when taking off from its home base in Palmdale, southern California. The closer the infrared observatory is able to fly to the poles, the less water vapour is present in the atmosphere above it, offering improved observing conditions.

from Space Exploration News - Space News, Space Exploration, Space Science, Earth Sciences https://ift.tt/32HqgnF
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