Question

rank the following stars from the h - r diagram in order of size from largest to smallest: antares, barnards star, deneb, procyon b, sirius a.

Explanation:

Antares is a red super - giant, which is extremely large. Deneb is also a super - giant but slightly smaller than Antares. Sirius A is a main - sequence star larger than Barnard's Star (a red dwarf). Procyon B is a white dwarf, which is very small.

Answer:

Antares, Deneb, Sirius A, Barnard's Star, Procyon B