Quick Answer: What Are The 7 Main Types Of Stars?

What is the smallest star?

The smallest star ever recorded — one about the size of Saturn — has been discovered by a team of astronomers, according to a study released Tuesday.

With the unwieldy name of EBLM J0555-57Ab, the star is located some 600 light-years away in our Milky Way galaxy..

What are the different types of star?

Types of Stars – ClassificationBlue Stars. These types of stars are quite rare with spectral types of either O or B. … Yellow Dwarfs. Yellow dwarfs have a 10% prevalence, with a spectral type G. … Orange Dwarfs. … Red Dwarfs. … Blue Giants. … Blue Supergiants. … Red Giants. … Red Supergiants.More items…•

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.

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.

What is the brightest star?

Sirius ASirius, also known as the Dog Star or Sirius A, is the brightest star in Earth’s night sky. The name means “glowing” in Greek — a fitting description, as only a few planets, the full moon and the International Space Station outshine this star.

What is a blue star?

Blue stars are stars that have at least 3 times the mass of the Sun and up. Whether a star has 10 times the mass of the Sun or 150 solar masses, it’s going to appear blue to our eyes. An example of a blue star is the familiar Rigel, the brightest star in the constellation Orion and the 6th brightest star in the sky.

What is the purpose of a star?

As for their purpose, stars are vital for life to exist. As we know, the Earth orbits the Sun at an ideal distance that caused life to thrive on its surface. The Sun’s rays allow plants, algae and cyanobacteria to photosynthesise and store energy while also releasing oxygen into the atmosphere.

How long will a star live?

about 10 billion yearsA 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 most common star type?

A red dwarf is the smallest and coolest kind of star on the main sequence. Red 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.

What are the two main types of stars?

The Different Types of StarsProtostar. A protostar is what comes before a star has formed – a collection of gas that collapsed from a huge molecular cloud. … T Tauri Stars. … Main Sequence Stars. … Red Giant Stars. … White Dwarf Stars. … Red Dwarf Stars. … Neutron Stars. … Supergiant Stars.

Which is the hottest star in the universe?

The hottest known star, WR 102, is one such Wolf-Rayet, sporting a surface temperature more than 35 times hotter than the Sun. Like Baskin-Robbins, Wolf-Rayet stars come in a variety of flavors.

What is a dead star called?

White dwarfs are dead stars.