What are the differences between a protostar and a red giant?

Answer 1

A protostar is when a large gaseous cloud is coming together under gravity, in the early stages of a stars formation. The gaseous mass of the protostar has not got to the stage at which nuclear fusion reactions are taking place. The gas becomes hotter and more dense, until finally there is enough pressure and temperature to allow the hydrogen to fuse together, giving off energy as a main sequence star.

Answer 2

A red giant is a star in the final stages of its life time that has expanded to hundreds of times its original diameter. Because the star has expanded without gaining mass, a reg giant has an extremely low average density. A neutron star is the collapsed core of a dead massive star. It contains a mass a few times that of the sun in an area only a few miles across, making it extremely dense; only the singularity of a black hole is denser.

Answer 3

As the gases in a protostar begin to collapse, the central core begins to heat up due to pressure. As more gases are absorbed, the greater the pressure. Once the temperature of the core reaches 10 million degrees K, hydrogen fusion begins, and the star begins it's life on the main sequence.

The star will stay on the main sequence whilst it still has hydrogen to fuse. Once all the hydrogen has been used, the star will drop out of the main sequence.

Protostar stage in the stellar evolution. [See related question]

Answer 4

Main sequence stars are all present in the evolution all masses of stars. (Low mass, Medium mass and High Mass) Neutron star, however, only occurs in High mass stars and only happens after a Super Nova Explosion. (Super Nova Explosion products=neutron star and black hole)

Check out Wikipedia if you don't get my explanation.

Hope that helps!

~jDoA~

Answer 5

Once a protostar has finally acquired enough mass the cores temperature and pressure are finally great enough to begin nuclear fusion in the stars core. This is when a start moves out of protostart into main sequence.

Answer 6

Protostar is an early stage of the Star Cycle. Protostars begin to bring itself together and form a Main Sequence star. Which is the stage our Sun is in. Main Sequence stars are just like our Sun, they make elements like Nitrogen and so on. After that stage, it is the time where it begins to become a Red Giant, or a Supergiant.

Answer 7

Stars on the main sequence are fusing hydrogen into helium in the core, whereas a red giant is fusing hydrogen into helium in the shell, while the core is inactive.

Answer 8

Size - Giants are as the name suggests, giant.

Answer 9

The size, colour and temperature. The blue giant will be the biggest, hottest star, while the red dwarf will be the coolest, smallest star.

Answer 10

It is not any different from any other star of similar mass on the main sequence, it is a typical star.