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If there were another star that formed a binary system with our star, then that star would either a) have to be far enough away that we wouldn't notice its gravitational pull on the planets in our solar system, or b) only pass through this part of its orbit very infrequently. If a is true, then why even bother calling it a binary system, since neither star affects the other? If b is true, then there would be massive disruptions to the solar system every time the second star passed through, and some planets (if not all of them) would be thrown out of their orbits, probably to be swallowed by one of the stars. The Kuiper Belt and Oort Cloud would both have massive holes where the second star passed through, which we would be able to observe.
Basically, while I suppose it's still possible (in that anything is possible until proven impossible), it's very, very, very unlikely that our sun is in a binary system with another star in the galaxy and we don't know about it.
Easy Math Editor
This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.
When posting on Brilliant:
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to ensure proper formatting.2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
Comments
If there were another star that formed a binary system with our star, then that star would either a) have to be far enough away that we wouldn't notice its gravitational pull on the planets in our solar system, or b) only pass through this part of its orbit very infrequently. If a is true, then why even bother calling it a binary system, since neither star affects the other? If b is true, then there would be massive disruptions to the solar system every time the second star passed through, and some planets (if not all of them) would be thrown out of their orbits, probably to be swallowed by one of the stars. The Kuiper Belt and Oort Cloud would both have massive holes where the second star passed through, which we would be able to observe.
Basically, while I suppose it's still possible (in that anything is possible until proven impossible), it's very, very, very unlikely that our sun is in a binary system with another star in the galaxy and we don't know about it.
That can't be the case,as the planets will become unstable and quickly get ejected
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Well probably in most cases, but not in all.
yes there is about 200-400 billion stars in our galaxy