No, it will spend most of it's life as a main sequence star.
No, a protostar is basically the BEGINNING of a star's life cycle.
protostar
the answer is a protostar
The "protostar". That's not classed as a true star, but I think that's the answer.
It doesn't differ from a star, it is a star and it is the second stage in a stars life after the nebula stage.
A protostar generates energy by friction whereas a main sequence star generates energy by fusion.
A protostar is more like a stage previous to a star - before it ignites.
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.
On the main sequence.
A protostar generates energy by friction whereas a main sequence star generates energy by fusion.
Yes, a new star that is in the process of formation is called a protostar. It is the early stage in the life cycle of a star when gravitational forces are causing gas and dust to condense and heat up, eventually leading to nuclear fusion and the birth of a stable star.
It depends on the size of the star forming. For a one solar-mass star it lasts about 1,000,000 years.