What does giant stars mean in science?
giant star, any star having a relatively large radius for its mass and temperature; because the radiating area is correspondingly large, the brightness of such stars is high.
What is the life of a star?
Stars live different lengths of time, depending on how big they are. A star like our sun lives for about 10 billion years, while a star which weighs 20 times as much lives only 10 million years, about a thousandth as long. Stars begin their lives as dense clouds of gas and dust.
What is the scientific definition of a star?
A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources.
What is the definition of a massive star?
Any star which is larger than eight solar masses during its regular main sequence lifetime is considered a massive star. Massive stars are born, just like average stars, out of clouds of dust called nebulae. When a nebula collects enough mass, it begins to collapse under its own gravity.
What is the difference between a giant star and a supergiant star?
What is the difference between a giant star and a supergiant star? Giant stars have radii between 10 and 100 solar radii and luminosities between 10 and 1,000 times that of the Sun. Whereas Supergiants have radii between 30 and 1,000 solar radii and luminosities between 30,000 and 100,000 times that of the Sun.
What is a giant star made of?
Forming a giant Most of the stars in the universe are main sequence stars — those converting hydrogen into helium via nuclear fusion. A main sequence star may have a mass between a third to eight times that of the sun and eventually burn through the hydrogen in its core.
What comes from giant or massive stars?
Super-giant come from giant or massive stars. They grow to as much as three times the mass of our sun as they lose the nuclear fuel at their core.
How long do giant stars live?
about 10 billion years
The most massive stars can burn out and explode in a supernova after only a few million years of fusion. A star with a mass like the Sun, on the other hand, can continue fusing hydrogen for about 10 billion years.
Which is known as the biggest stars in the universe?
The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun.
What are the 7 main types of stars?
Scientists classify stars by temperature and the elements they absorb, which are called their spectra. They have divided stars into seven main types. There are seven main types of stars: O, B, A, F, G, K and M. The O stars are the bright, hot, blue stars and the M stars are the dimmer, cooler, red stars.
What is the evolution of a massive star?
Massive stars evolve in much the same way that the Sun does (but always more quickly)—up to the formation of a carbon-oxygen core. Also, when more massive stars become red giants, they become so bright and large that we call them supergiants.
What is an example of a massive star?
The largest known star is UY Scuti, a hypergiant with a radius somewhere around 1,700 times larger than the sun. Its mass, however, is only 30 times that of our nearest star. If R136a1 swapped places with the sun, it would outshine our closest star as much as the sun currently outshines the moon.
What is the meaning of giant star?
Definition of giant star. : a star of great luminosity and of large mass.
What is an egiant star in science?
giant star in Science. A very large, bright non-main-sequence star that burns hydrogen at a much faster rate than a dwarf star. Giant stars are much more luminous and have shorter lifespans than the slower-burning dwarfs.
What is the lifespan of the largest star?
The larger the giant, the shorter its lifespan; the largest stars, with solar mass of around 100, blaze at several hundred thousand times the energy of the Sun and will last only a few million years, a very brief time when compared with the Sun’s 10-billion-year lifespan.
What are the different types of giant-class stars?
There are a wide range of giant-class stars and several subdivisions are commonly used to identify smaller groups of stars. 1 Subgiants. Main article: Subgiant. 2 Bright giants. 3 Red giants. 4 Yellow giants. 5 Blue (and sometimes white) giants.