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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...

Mile-wide, potentially hazardous asteroid 2003 SD220 to swoosh by Earth on Saturday

A potentially hazardous asteroid (PHA), designated 2003 SD220 (or 163899), is expected to fly by the Earth on Saturday, December 22, at around 1:04 UTC. The space rock, estimated to be about a mile wide (1.6 kilometers), will pass by our planet at a distance of approximately 7.34 lunar distances (LD), what corresponds to 1.75 million miles (2.81 million kilometers).

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

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