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Star Betelgeuse - A red supergiant in the constellation Orion

One fascinating star is Betelgeuse, a red supergiant located in the constellation Orion. Here are some intriguing facts about it: 1. Size and Volume: Betelgeuse is immense—if placed at the center of our solar system, it would extend past the orbit of Mars. 2. Variability: It is a pulsating variable star, meaning its brightness changes over time; it has been observed to vary in brightness over several months. 3. Life Cycle: Betelgeuse is nearing the end of its life cycle and is expected to explode as a supernova within the next million years, a relatively short time in astrophysical terms. 4. Distance: It is located approximately 640 light-years away from Earth. 5. Cultural Significance: Betelgeuse has been significant in many cultures and is commonly referred to as the “Shoulder of the Hunter” in the constellation Orion. 6. Color Indicator: Its reddish hue signifies a cooler surface temperature compared to other stars, which gives it a distinctive appearance. Betelgeuse con...
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To the moon and back: Apollo 8 and the future of lunar exploration

Apollo 8 was supposed to be a test flight, meant to simulate atmospheric re-entry from the moon but never meant to go there. Hurtling toward Earth at 2,407.5 miles per hour is hairy business and NASA, having never done so before, needed practice. But then the USSR successfully launched two of its own moonshots (unmanned Zond 5 and 6) on the heels of President Kennedy's call for men on the moon by the end of the '60s. It felt to most like a matter of time before America lost its space race for good.

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