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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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A 1-Stage, Fully Reusable Lunar Lander Makes the Most Sense for Returning Humans to the Moon

It's been more than 50 years since humans first set foot on the Moon, but we haven't been back since the Apollo era. As NASA develops the Artemis program, it's considering ways to return to the Moon... and stay there. That means developing flight hardware that can be reused. A recent study considered a dozen proposals for lunar landing systems and settled on a one-stage lunar lander that's completely reusable. This vehicle would act as a ferry, carrying astronauts to and from the Lunar Gateway to the surface of the Moon.

Read the full story by Matt Williams

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