A black hole of 5 M passed by Earth at, say, Neptune’s distance from the Sun? What would happen to our planet’s orbit and to life here? Hint: The Sun’s gravitational force is about 180 times greater...

A black hole of 5 M passed by Earth at, say, Neptune’s distance from the Sun? What would happen to our planet’s orbit and to life here? Hint: The Sun’s gravitational force is about 180 times greater than the maximum effect that black hole would have on us. The Sun’s force on Earth is about 17,000 times greater than Jupiter’s effect on us, for comparison.