Question

place the following events of the life cycle of a star in proper order. earliest 1 red giant 2 nebula 3 new star 4 white dwarf 5 black dwarf 6 protostar 7 becomes a main sequence star

Explanation:

Stars form from nebulae. A nebula collapses to form a protostar. The protostar evolves into a new star and then becomes a main - sequence star. After the main - sequence phase, it becomes a red giant. The red giant sheds its outer layers and the core contracts to form a white dwarf. Over a long time, the white dwarf cools to become a black dwarf.

Answer:

1. Nebula
2. Protostar
3. New Star
4. Becomes a Main Sequence Star
5. Red Giant
6. White Dwarf
7. Black Dwarf