In astronomy, a blue giant is a hot star with a luminosity class of III or II (bright giant). In the standard Hertzsprung–Russell diagram, these stars lie above and to the right of the main sequence.

They are larger than the Sun but smaller than a red supergiant, with surface temperatures of 10,000–50,000 K and luminosities from about 10,000 to a million times that of the Sun. They are most often an evolutionary phase between high-mass, hydrogen-fusing main-sequence stars and helium-fusing red supergiants, [ 4 ] [ 5 ] [ 6 ] although new ...

2017年8月5日 · Heaviest blue supergiant is 315 times more massive than the Sun. While blue giant stars are typically more modestly sized, blue supergiant stars can have more than 25 solar radii and 20 solar masses, making them the most massive stars in the Universe.

In astronomy, a blue giant is a hot star with a luminosity class III (giant) or II (luminous giant). In the Hertzsprung-Russell Diagram these stars are above and to the right of the main sequence. The term applies to a variety of stars at different stages of development, all evolved stars that...

The average blue giant has a surface temperature that blazes at 20,000 kelvin – that’s nearly four times hotter than the Sun! When converted to degrees Fahrenheit, this means that blue giants can burn at 35,500 degrees (that’s nearly 20,000 degrees Celsius)!

2009年2月3日 · A blue giant star can put out 10,000 times as much energy as the Sun. Astronomers categorize blue giants as type O or B stars, belonging to the luminosity class III. The can reach an absolute...

2009年2月3日 · Blue supergiant star have extremely high masses, sometimes with dozens of times the mass of the Sun. They form in the largest, most active star forming regions where large amounts of mass can...

2024年5月9日 · Blue giants are extremely luminous, often thousands of times brighter than the Sun. These stars have a relatively short lifespan, lasting only millions of years compared to billions for stars like our Sun.

Spica is the brightest star in this constellation. It is the 15th brightest star in the sky and is located 260 light years from earth, which makes it one of the nearest stars to our sun. Many people throughout history have observed it including Copernicus and Hipparchus.

2025年1月25日 · Evolution of a “Blue Lurker” Star in a Triple System Panel 1: A triple star system containing three Sun-like stars. Two are very tightly orbiting. The third star has a much wider orbit. Panel 2: The close stellar pair spiral together and merge to form one more massive star. Panel 3: The merged star evolves into a giant star.