Skip to main content

Featured

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...
Post a Comment
Read more
Labels

Old at heart: Solution to red giants' age paradox

Four years ago, several red giant stars were discovered to pose a paradox: even though they are built from old stellar material, their large masses indicate a younger age. Scientists have now solved the contradiction. Several of the investigated red giants must have merged with others during an advanced stage of stellar evolution, they conclude. In these cases, mass is not a suitable criterion for age determination; the stars are old.

from Space & Time News -- ScienceDaily https://ift.tt/2xiNBhI
Labels:

Comments

Post a Comment