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Black Holes

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by

Carmen Pascual

on 7 October 2013

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Transcript of Black Holes

all the light.
WE CALL IT BLACK
because it absorbs
When an exploding star (supernova), collapses...

Then forms a black hole.
But because the nearest
black hole
is
26,000
light years away...
The technology of today doesn't allow getting there.
At
17,500
miles per hour
it would take us
994,837,365
years to get there.
Black holes are expected to form when very massive stars collapse at the end of their life cycle.
Concept proposed by
Laplace
But
J.
Wheeler
217 mph
Time Travel
As you can see,
time isn't effected by a huge amount.
In fact,
when you get too close to a black hole, it does pull you in,
but if you are outside the Event Horizon and the Ergosphere
it cannot really affect you
BLACK HOLES
BY CARMEN PASCUAL
KEY POINTS
What is a black hole?

How are they formed?

History

Different types

Structure

How do you detect one?

A famous black hole

SOME VOCABULARY I WILL USE
MATTER
A BLACK HOLE IS ANYTHING
BUT EMPTY SPACE
They can continue growing
and growing
and growing
and growing
absorbing starts and merging with other black holes
Forming supermassive black holes
Using Newton's Theory of Gravity
coined
by
JETS OF GAS
EVENT HORIZON
ACCRETION DISK
STRUCTURE
ERGOSPHERE
THEY HAVE A TREMENDOUS AMOUNT OF GRAVITY
SOURCES!
WHAT DOES THAT MEAN?
Will our star eventually become a Black Hole?
NO!
Why not?
Our start does not have enough gravity to condense, or to implode
Are we close to any Black Hole?
Not really
TYPES
Three types depending on the size:
STELLAR-MASS
10 to 24 times as massive as the Sun
As many as 10 million to a billion in the Milky Way
SUPERMASSIVE
millions of times as massive as the Sun
In the center of most galaxies
MID-SIZE BLACK HOLES
HOW DO YOU DETECT ONE?
He can study them by detecting their effect on other matter nearby and with the emitted radiation.
They have a dramatic influence on the neighborhoods around them
Is NASA looking
into black holes?
NASA
YES!
There are astronomers that search for areas of starts and matter that are reacting to the behavior of black holes
but if you are outside the Event Horizon and the Ergosphere
x
3
mass of
the Sun
=
BLACK HOLE
CORE
HAWKING RADIATION
Pair of subatomic particles near a black hole
Negative goes in
Positive escapes > seen as radiation
WHAT IS AT THE END?
Singularity
Matter is crushed to infinite density
The pull of gravity is infinitely strong
CYGNUS X-1
X-ray source
accretion disk
14.8 mass of the Sun
THE
END
http://science.nasa.gov/astrophysics/focus-areas/black-holes/
http://hubblesit.org/explore_astronomy/black_holes/
http://science.howstuffworks.com/dictionay/astronomy-terms/black-hole.htm
http://en.wikipedia.org/wiki/Black_hole
http://www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.htm
http://amazng-space.stsci.edu/resources/explorations/blackholes/lesson/
"El aula en casa" Enciclopedia de consulta
MERGING
MASSIVE
REMNANT
"Sure, black holes can kill us, and in a variety of interesting ad gruesome ways. But , all in all, we may owe our ver existence to them."
-Philip Plait, Death from the Skies!: These are the way the world will end...
SURROUNDINGS
BUT WHAT ARE THEY?
Full transcript