Term
| Why has nobody ever seen a black hole? |
|
Definition
| Because there is too much material surrounding it and it's black as the name suggests. |
|
|
Term
| How does a Black Hole form? |
|
Definition
| When a very large mass star explodes, the mass condenses and collapses pulling in any material surrounding it. |
|
|
Term
| What is the Event Horizon? |
|
Definition
| The boundy of the black hole. Once the matter has entered the event horizon cannot get out again; not even light. |
|
|
Term
| What evidence do astronomers have for the Existence of Black Holes? |
|
Definition
| Evidence comes from binary stars which get drawn into the black hole forming an accretion disc of matter circling the area. It orbits so fast that it is hot enough to give of XRays. |
|
|
