Biology, 24.12.2019 16:31 jaclynnlyidaowdxnq

Abinary star system is made of stars, one of which is brighter than the other. astronomers are able to detect the dimmer star because it's gravity causes the bright star to astronomers can also be spot the dimmer star by observing a phenomenon called a(n) binary. this happens when the den star passes in front of the bright.

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