On 2002-12-03 12:20, SeanF wrote:
On 2002-12-03 11:17, GrapesOfWrath wrote:
On 2002-11-28 21:27, nebularain wrote:
Well, I can't say this is good/bad astronomy for sure (other than the feasibility of the ship actually surviving!) but the ship in the movie is near a star that goes supernova and turns into a black hole (which of course they almost get sucked into, but fortunately are able to escape by riding the final explosion out and away from it - umm, would there be one?). Well, whether accurate or not, it did look cool!
My beef about that would be that the resulting black hole would not have any more mass than the star that went supernova--so its gravitational attraction would not be any more than before it went supernova. Correct?
I was thinking the same thing. If the mass of the body didn't change (which it shouldn't), and the ship's distance from the center
of the body didn't change (which it shouldn't), then the gravitational pull wouldn't change.
I think that's the one
thing about black holes that "laymen" most often misunderstand. The gravity is only 'stronger' because you can get closer to the center without breaking the surface - you still have to get
closer to the center to experience any stronger gravity!