All stars are formed from protostars.
Protostars
Not all protostars become true stars. Some protostars may not have enough mass to sustain nuclear fusion in their cores and never become true stars, instead becoming failed stars known as brown dwarfs.
Protostars are the beggining of stars
1.Nebula ( plural for nebulae) are the birth place of stars. 2. If a critical temperature in the core of a protostar is not reached, it ends up a brown dwarf. 3. Stars begin their lives inside molecular clouds.
Clouds of gas and dust, called nebulas and then form into protostars.
Usually blue.
On the contrary, "protostar" is the name of an early stage in the development of a star.
Because when they are newly formed, they are very hot.
Other stars did the stars. This is true in tabloids as well as in astronomy. The birth of stars is usually preceded by the death of nearby stars. Stars going nova cause compression waves in the interstellar medium, causing pockets of gas to reach critical density. These pockets then collapse in on themselves creating protostars. Protostars contract until they reach critical density, and hydrogen in their cores start to fuse. A star is born.
Protostars was created in 1971.
Protostars has 271 pages.
The ISBN of Protostars is 0-345-02393-5.