A lot of people seem to have the impression that black holes are like vacuum cleaners, sucking up anything that comes near.
If the Sun were replaced with a black hole of equal mass, apart from the heat and light going out, we wouldn't notice anything. All the planets would still orbit more-or-less the same.
The scary thing would be a rogue, massive black hole hurtling through our solar system at a fraction of c. Such an event could destabilize orbits enough to make the remaining time on Earth quite terrifying. But, good news: if such an event should ever occur, we would be utterly powerless to change a damned thing, so we can rest easy knowing that panic is a waste of energy better spent on hedonistic pursuit.
