What type of star is most common?
Red dwarfsRed dwarfs are by far the most common type of star in the Milky Way, at least in the neighborhood of the Sun, but because of their low luminosity, individual red dwarfs cannot be easily observed..
Which star has the shortest lifespan?
The most massive stars have the shortest lifetimes. Because they have most fuel, they burn it so prodigously that their lifetimes are very short. A stars time on the main sequence varies from a few million to 2×1011. As we will see later, the way in which a star evolves depends on its mass.
Which color star is the coolest?
Red starsRed stars are the coolest. Yellow stars are hotter than red stars. White stars are hotter than red and yellow. Blue stars are the hottest stars of all.
What is the longest a star can live?
The Life Cycle of a High-Mass Star Generally, the bigger a star is, the faster it uses up its supply of nuclear fuel, so the longest-lived stars are among the smallest. The stars with the longest lifetimes are red dwarfs; some may be nearly as old as the universe itself.
What is a star lifespan?
about 10 billion yearsStars 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.
Can a star live forever?
No. Stars are born, live, and die. This process is called the “life cycle of a star”. Most of the time a star shines, it is in a stage of its life cycle called the main sequence.
What are the 5 categories of a star?
Star Classification. The Sun is a as a G2V type star, a yellow dwarf and a main sequence star. … Hertzsprung – Russell Diagram. … Main Sequence Stars – Young Stars. … DWARF STARS. … YELLOW DWARF. … RED DWARF. … Giant and Supergiant Stars – Old, Large Stars.RED GIANT.More items…
What are the five main groups of stars?
What are the 5 main groups of stars?Supergiants.Giants.Main sequence.White dwarfs.
What is the rarest type of star?
The rarest star — What is the rarest type of star? Each is classified as an O-type star — and O-type stars are the rarest main sequence stars in the universe, comprising just 0.00003% of known stars. They’re extremely prone to going supernova and collapsing into black holes or neutron stars.