- Betelgeuse is a red star that is losing about one solar mass every 10,000 years. The star spews out this material unevenly in all directions, forming a nebula around the star. The cloud of matter that surrounds Betelgeuse is 250 times the size of this star, and is said to extend about 30 astronomical units (AU) or 30 times the Sun-Earth distance1. Betelgeuse is in front of the greater Orion Molecular Cloud Complex, and light takes about 700 years to reach us from Betelgeuse, but about 1,300 years to reach us from the Orion Nebula and its surrounding dust and gas2.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Betelgeuse is losing about one solar mass every 10,000 years. The star spews out this material unevenly in all directions, forming a nebula around the red star. The cloud of matter that surrounds Betelgeuse is 250 times the size of this star. Also, this nebula is said to extend about 30 astronomical units (AU) or 30 times the Sun-Earth distance.theplanets.org/stars/betelgeuse-star/Betelgeuse, however, is actually well in front of many of the constellation's other bright stars, and also in front of the greater Orion Molecular Cloud Complex. Numerically, light takes about 700 years to reach us from Betelgeuse, but about 1,300 years to reach us from the Orion Nebula and its surrounding dust and gas.apod.nasa.gov/apod/ap200511.html
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