The discussion revolves around the hypothetical scenario of replacing the Sun with a black hole of the same mass, focusing on the implications for Earth's movement and atmosphere. It explores gravitational effects, thermal energy, and the nature of black holes in relation to mass.
Participants generally agree that gravitational effects would not change with the mass replacement, but there is disagreement regarding the implications for Earth's atmosphere and whether Earth would maintain its orbit or be drawn into the black hole.
The discussion does not resolve the implications of thermal energy loss or the specifics of black hole formation and mass in relation to the Sun.
havaliza said:You mean that Earth will continue it's regular movement around the earth?
I was thinking that Earth would straightly go into the black-hole, wouldn't it?
Could you explain a little bit more, please.
DaveC426913 said:Gravity depends on one thing and one thing only: the mass.
Since you've replaced the sun with an equivalent mass - regardless of what that mass is - the gravitational force will not change.
Black holes do not have any more gravitational pull than any other object of an equivalent mass. What's unique about black holes is that you can get much closer to them, which is where gravity gets very strong.