What heralds the arrival of a new star?a.Protostarb.T Tauri Starc.Herbig-Haro Objectsd.Quasarse.All of the abovef.None of the above

The arrival of a new star is heralded by several stages. Here's a step-by-step breakdown:

a. Protostar: This is the earliest stage of a star's life. A protostar is formed from a molecular cloud of gas and dust in space. The cloud collapses under its own gravity, causing the material to heat up and glow, forming a protostar.

b. T Tauri Star: After the protostar stage, a star becomes a T Tauri Star. This is a very young star that is still gathering mass from its surroundings. It's characterized by irregular changes in brightness.

c. Herbig-Haro Objects: These are bright patches of nebulosity associated with newborn stars. They are formed when fast-moving