What is the size of the biggest sun in space?

Answer 1

Point of information, the Sun is a star, 'Sun' is the actual name of the star. Anyway this is what I found online, you might find it interesting:
The star, known as LBV 1806-20, tips the scales of stellar masses at about 150 times the heft of the Sun. It shines up to 40 million times brighter than the Sun. The previous title-holder called the Pistol Star, is a mere six million times brighter than the Sun and weighs about 100 solar masses.

LBV 1806-20 was known before, but just as a bright blue object in high-powered telescopes. Now it has been examined more closely......
To see more visit this site==> http://www.space.com/scienceastronomy/brightest_star_040106-1.html

Answer 2

Stars are generally categorized by the letters: O B A F G K M, here the sun are a G-star, and the largest stars are thus O-stars.

O-stars are believed to be around 100 times more massive than the sun, apparently (we don't see any more massive than this) this is the maximum mass a sun can have, but what exactly prevents it from getting more massive isn't quite clear yet.

New theories do however suggest that the conditions in the universe when the first stars formed - allowed the creation of much larger stars - several hundred times the mass of the sun. But most agree that with the composition of different elements we see today, such stars cannot form any more

Answer 3

VV Cephei A with a diameter 1900 times that of our Sun is the biggest star known to us.

It is part of an eclipsing binary system, located about 3,000 light years away from earth, and consisting of a red supergiant, VV Cephei A with a blue companion, VV Cephei B.

VV Cephei A

VV Cephei A, the supergiant, is the largest star known. It is of spectral type M2 and is about 1900 times the Sun's diameter. If it replaced the Sun in our solar system, it would extend to the orbit of Saturn. It is 315,000 times as luminous as the Sun and is 100 solar masses.

VV Cephei B
VV Cephei B, the blue main sequence star, is separated from the larger star by a distance of 16 - 25 AU; it is a B0 star about 10 times the Sun's diameter and about 100,000 times its luminosity. The orbital period of the system is 7430 days (20.3 years). The eclipse lasts about 1300 days, and the midpoint of the last eclipse was in early January 1998.

LARGEST 32 STARS BY DIAMETER

Star name. Solar diameter (Sun = 1)
VV Cephei A 1900
V354 Cephei 1520
KW Sagitarii 1460
KY Cygni 1420
Mu Cephei (Herschel's "Garnet Star") 1420
La Superba (Y Canum Venaticorum) 1100
S Doradus 1000
V509 Cassiopeiae 910
R Leonis 900
R Doradus 830
V838 Monocerotis 800
V382 Carinae 747
Rho Cassiopeiae 738
Mira A (Omicron Ceti) 700
Antares (Alpha Scorpii) 700
Betelgeuse (Alpha Orionis) 650
S Pegasi 580
T Cepheii 540
S Orionis 530
W Hydrae 520
Y1 Aurigae 511
119 Tauri 510
R Cassiopeiae 500
Delta Canis Majoris (Wezen) 482
Chi Cygni 470
J Cassiopeiae 460
Alpha Herculis (Ras Algethi) 460
Eta Carinae 400
The Pistol Star 340
Chi Cygni 300
Epsilon Aurigae B 295
LBV 1806-20 200

Note that the Pistol Star and LBV 1806-20, though high up on the most massive star list and the brightest star list are a lowly 29th and 32nd on the largest star list, and Betelgeuse is only 16th

Answer 4

Another candidate for largest known star is LBV 1806-20. Possibly a binary star, it is located 30,000–49,000 light years from our Sun, toward the center of the galaxy. It has a total system mass of 130–150 Solar masses and a variable luminosity of 2 million to 40 million times that of the Sun, making it comparably luminous to Eta Carinae or the Pistol Star, contenders for the most luminous star (all of which are luminous blue variables).

There is debate over whether LBV 1806-20 is really a single star or two or more stars orbiting each other. If a single star, it would be significantly larger than the Pistol Star. We'll have to wait until further information is available to reach a conclusion.

Answer 5

The largest sun I know of is Betelgeuse. According to the website I found:
"The star may have between 12 and 17 times Sol's mass (ESA), over 650 times Sol's diameter, and around 40,000 to 100,000 times its bolometric luminosity."

Answer 6

The largest star is the Pistol Star, which is around 100 times the size of our sun in volume and brightness.

http://curious.astro.cornell.edu/question.php?number=377

Answer 7

there no SUN actually, they are called stars.

but i guess u can call a star a sun when they have planets orbiting them.

to answer your question...well, space is just too big for us to know every single star out there, so i cant answer your question either.

just so if u wanna know, eventually all planets orbiting stars will be vanquished when the stars run out of energy to counter its own gravity pull, resulting in the star getting smaller and smaller and smaller until it just explodes, throwing out all sorts of crap and depending on the mass of the star prior to its explosion, it becomes a white dwarf (our sun), neutron stars or black holes.

sorry i couldnt answer your question directly.

Answer 8

some of the red giant stars could be a hundred times or larger than our sun