Betelgeuse

Betelgeuse is approximately 643 light-years away from Earth, which translates to about 193 parsecs or 1980 trillion kilometers. In astronomical units (AU), where 1 AU is the average distance between the Earth and the Sun, Betelgeuse is located over 900,000 AU away.

A red super giant star nearing the end of its life. It is currently fusing helium in its core. Betelgeuse is expected to explode as a type II supernova, possibly within the next million years.

Rigel appears as bright as Betelgeuse even though it is further away because Rigel is intrinsically brighter (has a higher luminosity) than Betelgeuse. Despite being further away, its higher luminosity compensates for the distance, making it appear similarly bright in the sky.

Betelgeuse is much larger than the Sun. It is a red supergiant star, with a radius around 650-900 times larger than the Sun. If placed in our solar system, Betelgeuse would engulf all the inner planets including Jupiter.

Betelgeuse is about 640 light-years from the sun.

Betelgeuse appears bright in the night sky because it is a massive red supergiant star, about 1000 times larger than our Sun. Despite being much farther away from us than the Sun, its large size and high luminosity make it one of the brightest stars in the sky. Its reddish color also makes it stand out.

Betelgeuse is a red supergiant in the constellation Orion. It is approximately 640 light years from us.

Betelgeuse and Rigel are the two brightest stars in the constellation of Orion. They are very easy to spot, with Betelgeuse being at the top left and Rigel at the bottom right. Comparing the two it is also easy to notice the difference in colour as Betelgeuse is a red supergiant and looks reddish in colour, very different to Rigel.

Betelgeuse is about 18 or 19 times the mass of our sun.

With a radius of over 1000 times our sun, the volume of Betelgeuse is over a billion times our sun. So, our sun could fit into Betelgeuse over a billion times.

No one knows when it actually will become a supernova but it will take hundreds of years for the light to reach us It could be anytime. Betelgeuse is about 640 light years away. So it could have exploded anytime since 1370 (The year when the first steel crossbow was used in war) and we still wouldn't know it. Astronomers believe that the supernova from Betelgeuse will be observable by human civilization.

It has recently been reported to have shrunk in diameter by 15% since 1993. It would seem that it is "pulsing", expanding and then contacting. A sure sign of a star at the end of its life.

Betelgeuse is estimated at 20 solar masses and rather old, between 3.5 and 6 million years, for such a heavy weight.

When Betelgeuse does explode, it will create a new major object in the winter sky. A planetary nebula will replace Betelgeuse as the shoulder star of Orion. Because of its orientation, it is unlikely to cause any major effect on Earth.

Some doomsayers have said that Betelgeuse will explode in 2012 - if this is the case, we won't know until the year 2652.

Betelgeuse, despite being a cool supergiant star, has a high apparent magnitude because of its immense size and luminosity. Its large size means it emits a lot of light, making it visible from great distances. Additionally, its red color and irregular variability can also contribute to its higher apparent magnitude.

Betelgeuse is a red supergiant star located in the constellation of Orion. It is primarily composed of hydrogen, helium, and other elements like carbon and oxygen that were created through nuclear fusion processes within the star. Betelgeuse is expected to end its life in a supernova explosion due to its large size and unstable nature.

Betelgeuse and Rigel are both in the top 10 brightest stars in the sky. They have been seen bright in the sky even since cavemen looked up. So, they were discovered about the same time.

Betelgeuse is a red supergiant star located in the constellation of Orion. It has a diameter estimated to be around 700 times larger than the Sun. This makes it one of the largest stars known to astronomers.

Betelgeuse (also known as alpha ori) is a very large star, an M supergiant. This is because it has evolved far from the state in which stars spend most of their lives, known as the main sequence. For stars on the main sequence, which includes our Sun, there is simple proportionality between size and mass, and also a simple scaling for luminosity. For evolved stars the situation is less simple. Betelgeuse is more than 1000 times larger than the Sun, and 50000 times as luminous, but only about 20 times as massive. Most of the light from Betelgeuse comes out in the infrared, however, which is very different from the Sun. One consequence of the advanced evolutionary state of Betelgeuse is that it probably was much more massive when it was on the main sequence, and has already lost a significant fraction of its mass (probably more than half) in a stellar wind.

Rigel and Betelgeuse are stars in the constellation Orion. Orion is one of the most recognizable constellations in the night sky, known for its prominent belt of three stars. Rigel is located at the hunter's foot, while Betelgeuse represents one of his shoulders.

Betelgeuse is in the constellation Orion and is best seen during the winter months in the northern hemisphere. It is very well placed for viewing around the months of November, December and January. Orion is a very easy constellation to find and Betelgeuse is the very bright and reddish looking star at the top left of it.

Betelgeuse was not discovered by a single individual. It has been known since ancient times and was cataloged by early astronomers. Its name is derived from Arabic and means "armpit of the central one" referring to its position in the constellation Orion.

Betelgeuse has been bright in the night sky for millions of years. It would have been observed from the earliest days and therefore cannot have a discoverer.

It is hard to know for sure but it is thought to be about 3500°C or 6332°F.

Betelgeuse ("beetlejuice") is believed to be only a few million years old (~ 8.5 million) due to it's high mass.

It is also believed, that it may become a supernova within a time frame where it could be observed by human civilization.

Betelgeuse is in the constellation Orion. It is the red star making his left shoulder.

Both Betelgeuse and Rigel are listed as being only 10 million yeas old, compared to the sun's 4.5 billion. Both are also expected to supernova soon, though Betelgeuse is expected to go out sooner, as it's been anticipated since 2011.