[dangus]

Wait... wouldn’t a 5-earth mass black hole be a hell of a lot smaller than a grapefruit? At that size, you ought to be able to send a probe into it and have it not get spaghettified.

[Svartalfiar]

Wait... wouldn’t a 5-earth mass black hole be a hell of a lot smaller than a grapefruit? At that size, you ought to be able to send a probe into it and have it not get spaghettified.

Definitely a lot smaller, though just about everything with black holes is theoretical. Can such little mass even create a black hole? Gravity isn't strong enough to pull such little mass close enough together to have enough gravity over the small space to be a black hole (I think). But, if it did, it would have to be extremely small, much smaller than a grapefruit.