How would an earth-like planet be different if it were orbiting a star-black hole binary system?
I'm messing around with the idea of a planet that orbits both a star and a black hole that are in a stable orbit around each other. How would this affect conditions on the planet? Would the day/night cycle have strange quirks, or would a small black circle just periodically cross in front of the sun?
Assuming the planet is in a stable orbit in a habitable zone, and ignoring the circumstances that would lead to this configuration (assume all objects were magically placed in an ideal scenario), would there really be any differences on the planet?