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Somedude99
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A black hole does not have to have an incredibly large mass. It's not a large mass that makes a black hole, it's a large density.Somedude99 said:Stephen Hawking says that orbiting around a black hole would slow down time for those in orbit because of the incredibly large mass.
Why half? Are you just using that as an example?Somedude99 said:According to Hawking time would be cut down by half when in orbit.
Here I assume you mean "near the speed of light," rather than "at the speed of light."Somedude99 said:What happens? If light is constant, from Earth it would look like it's only orbiting at the speed of light, but in reality it should be going faster.
It's impossible for an object with mass to travel at the speed of light, but you could imagine the ship traveling at some large fraction of the speed of light, say 0.99999c. But note that even in the absence of gravity, if something is traveling at a large fraction of light speed their clocks will be slowed down in your rest frame, not sped up...so in the case of a black hole, the gravitational time dilation would just slow down their clock even further as measured by distant observers.Somedude99 said:I deleted the message because I thought I would find out myself. Since you replied already I'll try to explain further.
If the ship at the black hole appears from Earth to be moving slower in time... then if they were traveling at the speed of light how would they look from earth? The black hole is slowing down time but they are still traveling at the speed of light, so how do they end up?
Nope. You're assuming this, but it's not true. See #2.Somedude99 said:In other words, the ship in orbit should be traveling at near the speed of light, viewable from earth.
The speed of light in a vacuum is a constant, approximately 299,792,458 meters per second. However, the speed of light can be affected by the intense gravitational pull of a black hole, causing it to bend and distort.
According to Einstein's theory of relativity, it is not possible for any object with mass to travel at the speed of light. However, the closer an object gets to the event horizon (the point of no return) of a black hole, the faster it appears to move relative to an outside observer.
Time dilation is a phenomenon where time moves slower for an object in motion compared to an outside observer. As an object approaches the event horizon of a black hole, time dilation becomes more extreme, meaning time would appear to move slower for the object in orbit around the black hole.
In theory, an object would not be able to survive traveling at the speed of light due to the extreme forces and radiation present near a black hole. However, if an object was traveling at a high fraction of the speed of light, it may be able to survive for a short period of time before being destroyed by the intense conditions.
Traveling at the speed of light in orbit around a black hole would have significant implications for our understanding of physics and the universe. It could also potentially be used for time travel, as the extreme time dilation effects near a black hole could allow an object to travel into the future.