“Find a place inside where there’s joy, and the joy will burn out the pain.” -Joseph Campbell
One of the cardinal rules of a black hole is that anything that falls inside the event horizon — that crosses that invisible boundary — can never escape. That’s because the escape velocity from inside the event horizon is greater than the speed of light in a vacuum, c, a speed that nothing in this Universe can exceed.
In flat space, it’s easy to set up an infinite series of observers that all agree on the speed of light at different locations. Image credit: PixaBay user PixelAnarchy.
But in curved space, different observers don’t agree on what the speed of anything, even light, is at different locations in space. Some observers will even see a photon move at speeds greater than c, for that matter. Could that mean that maybe there’s a loophole, and that something like a passing gravitational wave could enable a particle or photon from inside the event horizon to make it out after all?
Light and ripples in space; as the light passes through non-flat space, it changes how an observer at any other location perceives the passage of time for the light. Image credit: European Gravitational Observatory, Lionel BRET/EUROLIOS.
from ScienceBlogs http://ift.tt/29m4bVo
“Find a place inside where there’s joy, and the joy will burn out the pain.” -Joseph Campbell
One of the cardinal rules of a black hole is that anything that falls inside the event horizon — that crosses that invisible boundary — can never escape. That’s because the escape velocity from inside the event horizon is greater than the speed of light in a vacuum, c, a speed that nothing in this Universe can exceed.
In flat space, it’s easy to set up an infinite series of observers that all agree on the speed of light at different locations. Image credit: PixaBay user PixelAnarchy.
But in curved space, different observers don’t agree on what the speed of anything, even light, is at different locations in space. Some observers will even see a photon move at speeds greater than c, for that matter. Could that mean that maybe there’s a loophole, and that something like a passing gravitational wave could enable a particle or photon from inside the event horizon to make it out after all?
Light and ripples in space; as the light passes through non-flat space, it changes how an observer at any other location perceives the passage of time for the light. Image credit: European Gravitational Observatory, Lionel BRET/EUROLIOS.
from ScienceBlogs http://ift.tt/29m4bVo
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