A protostar is different from a star in that a protostar cannot be seen because it is enveloped in dust. Unlike a star, a protostar does not have any fusion in its core yet.
No. It starts as a protostar.
A protostar is more like a stage previous to a star - before it ignites.
There is not really another name for a protostar.The formation process in simplification is:Giant molecular cloudProtostarT Tauri starPre-main sequence star (or PMS star)Main sequence star.
A star that is forming is called a protostar.
Protostar. Comment: Or, perhaps it's the nebula from which the protostar forms.
The term is "protostar", not "prostar". Yes. A protostar is an early stage of a star.
A protostar will live as long as 100,000 years. After material stops falling on the protostar it will enter then T Tauri star phase.
No one. It comes from the Greek - proto - meaning first. So first star - a protostar.
That depends on the mass of the proto-star.
through the process of fusion, it becomes a star: the birth of the star is the start of fusion. therefore, it is after fusion that it is classified as a star.
Before a star is born, it is called a protostar.
If you can see it, its a star. Protostars radiate only in the infrared.
That's called a "protostar".
trapping of thermal energy inside the protostar
The pressure within a protostar counters gravity and prevents the star from collapsing further.