New answers tagged binary-star
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How would a person know if a planet is orbiting a binary star?
You check the periodic frequency shift with the Doppler effect. The light from the two stars is not very suitable because each light source moves. Much better: The binary system (total mass $m_A\...
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Are there naked eye binary stars with periods less than 100,000 years?
Yes, Algol is not far away. The two stars orbit each other in 2.867328 days. Further examples.
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5
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Are there naked eye binary stars with periods less than 100,000 years?
I queried the 4th Catalog of Orbits of Visual Binary Stars for systems with both components having $V<6$ and period $<10^5$ years. There were 77 examples, but the widest separation is 17.5 ...
- 146k
5
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Accepted
How long would we survive an approaching neutron star?
The following was too long for a comment, but I don't claim it is an answer.
The first part is easy. At a relative velocity of 500 km/s, the neutron star will race, probably almost unperturbed, ...
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