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

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?