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goldk
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With respect to time in empty space, how massive does a planet have to be to affect the time to the point where the planet's time runs half the speed of empty space time?
goldk said:With respect to time in empty space, how massive does a planet have to be to affect the time to the point where the planet's time runs half the speed of empty space time?
goldk said:Pervect: But from our perspective it does seem to stop for all practical purposes. I do see what you mean though.
pervect said:Suppose you were on a rocketship, accelerating at 1g. And you look down at the Earth through a telescope, monitoring a laser beam that has a precise set frequency (as seen on the Earth).
About 1 year into your journey, the laser beam will redshift into extinction, essentially disappearing behind an event horizon created by your acceleration. This event horizon is formally very similar to that of a black hole, and is called the Rindler horizon.
You might say that from the rocket ship's viewpoints "time stops" on the Earth at the instant it falls into the event horizon. The time dilation factor goes to zero. But people on the Earth will neither know nor care that they fell below the event horizon created by your rocketship's acceleration.
There's a treatment of the Rindler horizon online at http://gregegan.customer.netspace.net.au/SCIENCE/Rindler/RindlerHorizon.html
it may or may not be too advanced (I don't know your background). For a textbook treatment, I'd recommend MTW (but it requires tensors).
Understanding the Rindler event horizon is a big help in understanding the rather similar black hole event horizons.
The mass of a planet is directly related to the speed of time through the principle of gravity. According to Einstein's theory of general relativity, the greater the mass of an object, the stronger its gravitational pull. This results in a distortion of space-time, causing time to pass slower near objects with larger masses.
No, there is no specific mass threshold at which time is cut in half. The mass of a planet is just one factor that affects the speed of time. Other factors such as the distance from the planet and its rotation also play a role.
Yes, a planet can be too massive to experience a significant change in time. This is because the effect of gravity on time is relative to the observer. For example, a person standing on a planet with a very large mass may not notice a significant difference in time compared to someone standing on a smaller planet, as long as they are both at the same distance from the planet's center of mass.
No, it is not possible for a planet to have a negative impact on time. The effect of gravity on time may cause it to pass slower, but it cannot reverse or go backwards. This is because time is a fundamental dimension of the universe and cannot be altered or affected in a negative way.
The mass of a planet does not directly affect the aging process of living organisms. However, the gravitational pull of a planet can have an indirect impact on the aging process by causing time to pass slower. This means that organisms living on a planet with a larger mass may age slightly slower compared to those on a planet with a smaller mass, but the difference would be very small and not significant in the lifespan of an organism.