Black Holes
In simplest terms a black hole is an area of space that has so much mass concentrated in it that there is no way for nearby objects to escape its gravitational pull. To understand the magnitude of this gravitational pull we need to explore our best theory of gravity, at the present moment, Einstein's general theory of relativity. His premise states that anything with mass will bend the fabric of space and time. The greater the mass the more distortion in the fabric of the universe. Imagine the universe as a giant rubber sheet with objects, varying in weight, placed upon it, representing planets, asteroids, moons, etc. The objects with greater mass distort the fabric more and hence have a stronger gravitational field. For another object to escape the pull it must achieve something called escape velocity. Escape velocity is the speed you must achieve to get away from a planet and into space. The earth escape velocity is 25,000 mph, while the moon, with a smaller mass, is about 5,300 mph. A black hole has such a large concentration of mass in such a small area that the escape velocity is faster than the speed of light. Then, since nothing travels faster than light, nothing can escape a black holes gravitational field. Even a beam of
In reality scientist work in a much less demanding atmosphere, shaped by observation and consensus. Let's suppose that you get into your spaceship and decide to fly into a black hole, what would happen to you? The first thing you would have to do is turn off your jets and just coast into it. However as you get closer and closer to the singularity you begin to feel a tidal, or tremendous pulling, gravitational force. The main ones are static, charged and rotating, and mainly have to do with different types of movement in the system. This is because of two main reasons. As you approach the event horizon, to the observer, you would move slower and slower, never crossing over the boundary of the event horizon. The star expands quickly and then collapses in on its self. So how do you find, or even see, something like this (http://www. As I stated before a black hole is a mass in space where the gravitational pull is so strong that nothing, not even light can escape. Most of the sub-categories, such as wormholes and white holes, are highly theoretical, and many astronomers believe do not exist at all (http://www. This moving of a black hole is called a blue shift. Secondly, things aren't that precise out there in the universe.
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Acceptance Essays
