Ask your own question, for FREE!
Earth Sciences 9 Online
OpenStudy (julburg22):

What do scientists use to understand how stars change over time? comparison constellations spectrographs Hertzsprung-Russell diagram parallax measurements

OpenStudy (julburg22):

The answer was C.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!