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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...

New paper indicates potential for primitive life on icy Barnard b super-earth planet if geothermal activity exists

Barnard b (or GJ 699 b) is a recently discovered Super-Earth planet orbiting Barnard's Star, making it the second nearest star system to the Earth. Although likely cold (-170 degrees centigrade), it could still have the potential to harbor primitive life if it has a large, hot iron/nickel core and enhanced geothermal activity. That was a conclusion announced by Villanova University Astrophysicists Edward Guinan and Scott Engle at a January 10 press conference held at the 233rd meeting of the American Astronomy Society (AAS) in Seattle, WA.

from Astronomy News - Space News, Exploration News, Earth Science News, Earth Science http://bit.ly/2HgFPwH

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