Betelgeuse is a red supergiant star that is cooler and brighter compared to our Sun. It is significantly larger and, if centered in our solar system, its atmosphere would extend beyond the orbit of Mars. Despite its youth, Betelgeuse is nearing the end of its lifespan, showcasing that larger stars die faster.
In comparison to our Sun, Betelgeuse is a red supergiant star that is significantly larger in size and has a cooler surface temperature, but with a much hotter core. Betelgeuse, which can be easily located in the constellation Orion, is known for its considerable luminosity, being the 8th brightest star in the night sky. This significant difference in brightness between Betelgeuse and our Sun is due to its larger size and extended atmosphere, which, if Betelgeuse were placed in our solar system, would stretch beyond the orbit of Mars, and potentially even Jupiter.
Betelgeuse is indeed a cooler and brighter star compared to our Sun. Despite being relatively young at 10 million years old, it has already expanded into a red supergiant and is nearing the end of its lifespan, while our Sun is much older at around 4.5 billion years. The life cycle of stars like Betelgeuse illustrates that larger stars evolve and die much faster than smaller ones like our Sun.