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2007-03-17 05:53:13 · 11 answers · asked by Kevin 1 in Science & Mathematics Astronomy & Space

11 answers

The biggest stars are red giant that are near the end of their life. Measuring the exact diameter of stars is very difficult, but Betelgeuse (in Orion) is one of the biggest known

2007-03-17 05:54:06 · answer #1 · answered by spaceprt 5 · 0 2

Seems like people keep trying to answer questions you didn't ask.

No one has yet to answer what is the largest star. Unless they are doing it now as I type.

VY Canis Majoris is the largest star so far observed from the source I am using at this moment. It has a diameter 1800 and 2100 times that of the Sun. It is clasiffied as a RED HYPERGIANT.

Bringing in 2nd just for kicks is VV Cephei at 1600 to 1900 Solar Radii. This is in a BInary System. It is classified as a Red Supergiaint. The other star is a Blue Star and believed to be a main sequence star.

On a side note Betelgeuse is a semiregular variable star and only 600 times the size of the sun.

2007-03-17 06:29:45 · answer #2 · answered by Rick G 2 · 2 1

I need to throw my hat in the ring here to support the last two answers. VY Canis Majoris and VV Cephei are the top contenders for the largest known stars out there. VY CMa is most likely the larger of the two by a small margin. These stars make Betelgeuse and Antares look small. They are enormous. They are large enough that if they sat in place of our sun, they would extend out past the orbit of Saturn, engulfing all of the first 6 planets in our solar system.

The sun is most definitely not anywhere close to the top of the list for the largest star. Our sun is actually rather small in the galaxy. The Pistol Star (so named because it lies in the center of the Pistol Nebula, named because of it's shape) is one of the top contenders for the most luminous stars out there, but it is not the largest (though it isn't too far from being so).

2007-03-17 10:14:44 · answer #3 · answered by Arkalius 5 · 1 0

VY Canis Majoris is a red hypergiant. This is the largest known star and one of the most luminous stars known.

Roberta M. Humphreys (2006) estimates the radius of VY CMa is between 1800 and 2100 solar radii. If our sun were replaced with such a star, its surface could extend to the orbit of Saturn.

2007-03-17 06:05:01 · answer #4 · answered by Anonymous · 2 2

The largest known star, in terms of mass and brightness, is the dramatically dubbed Pistol Star. The Pistol Star is closer to the center of the Milky Way than we are, and isn't visible to the naked eye on account of galactic dust. It's about 100 times the size of our sun, and burns 10,000,000 times as bright.

It's called the Pistol Star because it's believed to be the source of a giant nebula, or cloud of dust and gas. Recent pictures from the Hubble Space Telescope confirm this relationship. Originally, the Pistol may have had 200 to 250 times more mass than our sun, before it "fired off" the majority of its mass into the galaxy.

The brightest visible star in the night sky is Sirius in Canis Major, a constellation that represents one of Orion's hunting dogs. Ancient astronomers predicted warmer weather when Sirius appeared on the night sky, hence the "dog days" of summer.

2007-03-17 06:01:40 · answer #5 · answered by Its rocking 1 · 1 3

Betelgeuse (I think I spelled it right) is a very large red giant, which is very close to dying. When it does...SUPERNOVA!!! Don't worry, it's too far off to do any major damage. We may feel very Minor effects on earth. To find it look towards Orion's belt, It's the red twinkling one.

2007-03-17 05:57:49 · answer #6 · answered by Anonymous · 0 2

Star Jones before her surgery? Either her or the Red Giant.

2007-03-17 05:57:00 · answer #7 · answered by apocalypso blues 5 · 1 3

The Pistol star

2007-03-17 06:00:16 · answer #8 · answered by Anonymous · 1 3

Sun.

2007-03-17 05:56:27 · answer #9 · answered by Sheeth 5 · 0 3

the biggest star to date is uy scuti.....radius 1.708.......

2015-02-28 13:00:30 · answer #10 · answered by philip 2 · 0 0

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