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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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Discovering trailing components of a coronal mass ejection

Using Green Bank Observatory in West Virginia, PSI Associate Research Scientist Elizabeth A. Jensen's team observed radio signals from the MESSENGER spacecraft and discovered that solar eruptions known to cause communication disruptions and electrical grid failures as they hit Earth have secondary trailing impacts. Jensen is lead author of "Plasma Interactions with the Space Environment in the Acceleration Region: Indications of CME-trailing Reconnection Regions" that appears in The Astrophysical Journal. Co-authors include PSI Senior Scientists Deborah Domingue Lorin and Faith Vilas.

from Space Exploration News - Space News, Space Exploration, Space Science, Earth Sciences https://ift.tt/2NozE8t
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