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Betelgeuse is 640 light-years away from the Earth.

1 light-year is the distance traveled by light in 1 year.

speed of light = 3 x 108 meters per second

So, 1 ly = 3 x 108 x 365 x 24 x 60 x 60 = 9.46 x 1015 meters

640 light-years = 640 x 9.46 x 1015 = 6.05 x 1018 meters

1 meter = 0.621 x 10-3 miles

640 light-years = 6.05 x 1018 x 0.621 x 10-3 = 3.76 x 1015 miles

That is 3,760,000,000,000,000 miles.

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No, it is a red supergiant star.

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Its between 500 to 790 light years away, but it has been proven difficult to measure. 644 light years is the approximation.

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The movie ghost beetlejuice will jump out. boo.........

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All elements up to Iron are found in very star (except for very young stars as they have not reached that point yet). Though most of the elements are hydrogen and helium.

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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.

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If the Sun was replaced by Orion's star Betelgeuse , its size would completely engulf the earth. Also it would extend past the orbit of Jupiter, and most of the planets would be inside the star including Jupiter. Betelgeuse would outshine the Sun like our Sun outshines the Moon. Unfortunately the Earth would have a "Front Row Seat" when the Red SuperGiant blows itself into oblivion. The explosion would be so bright that the star in Orion (constellation) which is 640 Light Years away. Days would still change from day into night, but for a few weeks or so it would appear like there are two Suns in the sky.

this is what would happen when Betelgeuse explodes :)

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

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The answer is unknown because it's precise distance from our solar system has never been determined so getting a size estimate is problematic, at best. Estimates range from 160 to 1200 light years distance with 600-700 light years being the most accepted distance. It is estimated that Betelgeuse is only 1 million years old and will go nova within the next 1 million years.

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The star Betelgeuse (or "beetlejuice") is a Type M red supergiant in the constellation Orion. It is pronounced "bet- L (like the letter L) -geese," meaning armpit of the giant.

It is very luminous, and one of the largest stars known [See Link]. For comparison, if the star was at the centre of our solar system its surface would extend out between the orbits of Mars and Jupiter, engulfing Mercury, Venus, Earth and Mars.

It has a mass 20 times that of our Sun (Sun = 1.9891 × 1030kg = 333,000 times that of Earth)

It's approximately 600 light years from us.

The name is a corruption of an Arabic word meaning "hand of the central one".

It is likely that Betelgeuse will become a supernova. Because of its size and age of 8.5 million years it may explode within the next thousand years. (However, due to its distance from us, it may have already happened!!!)

[It's also a name of a film]

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Betelgeuse or Alpha Orionis and Rigel or Beta Orionis are in the constellation of Orion the Hunter.

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Betelgeuse is more luminous than Aldebaran.

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Rigel is blue and Betelgeuse is red.

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Betelgeuse is a supergiant red star that is nearing its end of life. The sun is a relatively small main sequence star in the middle of its life.

It is believed that Betelgeuse is only 10 million years old, and that it has evolved so rapidly because of its extremely high mass - it is one of the largest stars we know of - and its demise as a type II supernova is predicted within only the next 1 million years. At that point, it will be visible even during the day.

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1180 solar radius

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Betelgeuse ("Beetlejuice") has a surface temperature of around 3,500 Kelvin. (3,200º Celsius or 5,800º Fahrenheit)

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Betelgeuse is about 640 light-years from the sun.

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40,473,390 AU

Comment: That's a reasonable number, but there's a lot of uncertainty over the exact distance, so it's a bit misleading to give such a precise answer.

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It is the brightest type of star, Red Supergiant.

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Antares has a radius of about 800 solar radii whereas Betelgeuse has a radius of about 1,180 solar radii.

Both are massive compared to our Sun.

See related link for a pictorial comparison.

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betelgeuse

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Most definitely. Jupiter is a planet and Betelgeuse is a star. Our sun is much larger than Jupiter and Betelgeuse is much larger than our sun.

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It comes from Arabic.
It is the second brightest star in Orion and that is what Betelgeuse means.