What is a group of stars that form a galaxy called?

What is a group of stars that form a galaxy called?

Small groups of stars are called star systems, and somewhat larger groups are called star clusters. There are even larger groups of stars, called galaxies. Our solar system is in the Milky Way Galaxy, which is just one galaxy in the universe.

Is a galaxy a star system?

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally “milky”, a reference to the Milky Way.

What are stars galaxies and planets?

Most of the stars in our galaxy are thought to host their own families of planets. The Milky Way galaxy is just one of billion of galaxies in the universe. The universe is a vast expanse of space which contains all of everything in existence. The universe contains all of the galaxies, stars, and planets.

What is a group of solar systems called?


What is the name of the coolest star?

One way that stars are categorized is by temperature. Since the temperature of a star can determine its visual color, this category scheme is known as spectral type. The main categories of spectral type are M, K, G, F, A, B, and O. The coolest stars (red dwarfs) being M, and the hottest stars being O.

What is the name of the coldest star?

According to a new study, a star discovered 75 light-years away is no warmer than a freshly brewed cup of coffee. Dubbed CFBDSIR 1458 10b, the star is what’s called a brown dwarf.

What classification of stars is the coolest?

The spectral sequence is also a colour sequence: the O- and B-type stars are intrinsically the bluest and hottest; the M-, R-, N-, and S-type stars are the reddest and coolest.

How can stars be classified?

Astronomers classify stars according to their physical characteristics. Characteristics used to classify stars include color, temperature, size, composition, and brightness. Astronomers use spectrographs to determine the elements found in stars.

What is the closest star to our sun?

Alpha Centauri A