An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second s

Question

3 years ago

13

An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second s

tar. Which of the following is a valid conclusion about the first star?
It is larger than the second star.
It is smaller than the second star.
It is older than the second star.
It is younger than the second star.

Physics

2 answers:

Dmitrij [34] · Answer 1 · 2022-02-27T09:51:28+03:00

Dmitrij [34]3 years ago

6 0

It is a younger then the second star.

Novosadov [1.4K] · Answer 2 · 2022-02-27T11:18:16+03:00

Answer:

It is larger than the second star.

It is younger than the second star.

Explanation:

The star's actual brightness depends on two factors: size and surface temperature. If we take two stars of the same size, hotter star would look brighter. If we take two stars with the same surface temperature, bigger star would like brighter.

In the given scenario, two options can be correct. The first star might be larger than the second one or it can be younger as younger stars are hotter.