On the contrary, "protostar" is the name of an early stage in the development of a star.
correct, large stars typically become black holes after exploding; our sun is relatively small compared to other stars
Most stars end up as white dwarfs. A few become neutron stars. Even fewer become black holes.
Those are called "circumpular" stars. Exactly which stars are circumpolar depends on your location. For example, if you live 30° south of the equator, all stars that are up to 30° from the south pole of the sky will never set.
False. Only the most massive stars will become black holes.
Red giants - As they near the end of their life they will "shed" their outer layers, returning material back into the Universe as a planetary nebula.Supernova - they seed the Universe with heavy elements - metallicity, which when formed into "newer" stars has the effect of making them "burn" slower.Supernova are also one manner in which dust clouds get that "nudge" to start forming protostars.
prorostars don't ALWAYS become stars
All stars are formed from protostars.
Glowing cloud sections that will eventually become stars are protostars. These protostars are clouds of interstellar gas and dust, which gradually collapse causing a hot dense core to form and evolve into a star.
Protostars
Protostars are the beggining of stars
Clouds of gas will collapse, under certain circumstances, due to their own gravity. These will eventually become stars. This process is described in more detail in the Wikipedia article on "Protostars".
Clouds of gas and dust, called nebulas and then form into protostars.
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.
i think it depends on how the stars collect the energies they need...i hope it help