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What planet has a event horizon?
No planet has an event horizon. A black hole has an event horizon; it is the radius within which light cannot escape.
What is the length of a black hole?
The diameter is usually considered the diameter of the event horizon. The diameter of this event horizon is directly proportional to the black hole's mass. More information at http://en.wikipedia.org/wiki/Schwarzschild_radiusThe diameter is usually considered the diameter of the event horizon. The diameter of this event horizon is directly proportional to the black hole's mass. More information at http://en.wikipedia.org/wiki/Schwarzschild_radiusThe diameter is usually considered the diameter of the event horizon. The diameter of this event horizon is directly proportional to the black hole's mass. More information at http://en.wikipedia.org/wiki/Schwarzschild_radiusThe diameter is usually considered the diameter of the event horizon. The diameter of this event horizon is directly proportional to the black hole's mass. More information at http://en.wikipedia.org/wiki/Schwarzschild_radius
Does a white dwarf have a event horizon?
No, white dwarfs do not have an event horizon. Event horizons are a characteristic feature of black holes, where the gravitational pull is so strong that not even light can escape. White dwarfs are dense stellar remnants, but they do not have the extreme gravity needed to form an event horizon.
What is the name for the boundary around a black hole beyond which events cannot affect the observer?
The "boundary" you're probably thinking of is called the event horizon. Past this point, the escape velocity of the black hole exceeds the speed of light, meaning nothing, including light, can escape it.
What phrase has been used to describe the event horizon in black holes?
The phrase commonly used to describe the event horizon in black holes is "point of no return."
How big do event horizons get?
Assuming you mean the event horizon of a black hole (there are other types as well), the diameter of a black hole as measured by its event horizon is directly proportional to its mass. The larger the mass, the larger the diameter. Thus, as a black hole's mass increases, it will get bigger. The only limitation is how much mass a black hole is able to incorporate from its surroundings.
What part of a black hole is the strongest that nothing can escape?
The event horizon. Anything inside the event horizon can't escape.
How can you escape from the event horizon?
You can't. It is physically and mathematically impossible to escape a black hole once you cross the event horizon.
What is the event horizon in a black hole?
That is the "point of no return". Within the event horizon, gravity is so strong that anything that crosses the event horizon can't get out, even if it moves at the speed of light.
What is the shape of black hole?
The event horizon of a black hole is spherical.
What is a black hole's boundary?
its called the event horizon
What is the place of no return?
The event horizon of a black hole.
