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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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Help pave the way for Artemis: Send NASA your mini moon payload designs

Future exploration of the Moon and beyond will require tools of all shapes and sizes—from sweeping orbiters to the tiniest of rovers. In addition to current planned scientific rovers like the Volatiles Investigating Polar Exploration Rover, or VIPER, NASA could one day send even smaller rovers to help scout the Moon's surface. These tiny robots would provide mission flexibility and collect key information about the lunar surface, its resources and the environment. The data collected by these rovers would be helpful for future lunar endeavors and NASA's Artemis program.

from Space Exploration News - Space News, Space Exploration, Space Science, Earth Sciences https://ift.tt/3c5GDPw
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