Is the solar system part of a binary star system given the great year.?
Question:
Answer:
If the sun were part of a binary system, it would revolve around the barycenter of the binary system. We would be able to dected this movment by comparing the Sun's position to other nearby stars and to more distant stars. Since we don't dectect any such movement around the barycenter, that means that any such compainion star must be very very small, making the barycenter close to the sun's positon, or very far away, making the motion of the sun about the barycenter very slow.
Neither of these conditions are true of any other binary star system we see, so no.
If we were part of a binary system we would have very different seasonal climate changes and we would be able to detect the altered orbit of the earth around the sun. The nearest star is 4.25 light years away. At the speed earth is traveling in space it would take 54000 years to complete a circle around both stars. When inbetween the stars all live on earth would end due to the extreme cold.
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