An astronomer measures the light coming from two stars, star a and star b. they appear to be equally bright. from other measurements, she knows that star b is actually twice as far away as star a. what can she conclude?

What is the earth matial ot igneous rock

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

The climate in the temperate zone is cold in summers and warm in winters very cold year-round very warm year-round warm in summers and cold in winters