Which is most useful in classifying stars?(1 point)

Question

knowing the color and brightness of a star
knowing the size of a star
knowing the movements of a star
knowing the apparent magnitude of the star

Answer 1

Knowing the color and brightness of a star is most useful in classifying stars.

Answer 2

What do scientists use to describe a constellation?(1 point)
its star pattern
its star pattern

its boundary
its boundary

its brightest star
its brightest star

its story in Greek mythology

Answer 3

Scientists use its star pattern to describe a constellation.