4 ms·

Disclaimer: I can't make any calculation but... Wouldn't Star A keep orbiting Star B inside the surface of Red Giant Star B, which wouldn't be very dense at the

Disclaimer: I can't make any calculation but... Wouldn't Star A keep orbiting Star B inside the surface of Red Giant Star B, which wouldn't be very dense at the radius of the orbit? There is drag but a lot of inertia. Star A would start from further away than now. It would probably get some extra mass in the process, absorbing the gas of the red giant.

chasil 4y ago
Here is an interesting variant on this concept. https://en.wikipedia.org/wiki/Thorne%E2%80%93%C5%BBytkow_object https://en.wikipedia.org/wiki/Thorne%E2%80%93%C5%BBytkow_obj... The drag will lead to orbital decay.
- pmontra 4y ago
  Thanks. The time frame is only hundreds of years.