Some basic knowledge about black holes and its types

1. THE BLACK HOLE
BY
SENTHIL KUMAR.C

2. What is a black hole?
OBlack holes are places where
ordinary gravity has become so
extreme that it overwhelms all other
forces in the Universe. Once inside,
nothing can escape a black hole's
gravity — not even light.

3.  French scientist Pierre-
Simon Laplace (1749-1827)
was one of the first to
discuss the possible
existence of black holes.
 American physicist John
Archibald Wheeler first
introduced the term black
hole in 1967 and led many
important studies into their
properties.

4. How do Black Holes form?
OBlack Holes form when massive
stars which has 8 times the mass of
the sun dies.
OThe energy released by those stars
in few seconds is equal to the
energy released by the sun in an
year.

6. CREATION OF A BLACK HOLE (DEAD OF A STAR)

8. Right there is a brand new Black Hole

10. GRAVITY & LIGHT VS BLACK HOLE

11. Stellar-mass black holes are created
when massive stars explode as
supernovae. The image shows a
supernova remnant in the
constellation Cassiopeia.
Collisions of galaxies contribute to the
growth of supermassive black holes. The
image show the ''Antennae,'' a pair of
colliding galaxies.

12. The Large Hadron Collider is a 17-mile long particle accelerator in
Switzerland that may reach energies high enough to create
miniscule black holes.

13. Where are they?
OThere are uncountable black
holes in the universe.
OBlack holes are in between
each of the galaxies. There are
millions to billions black holes in
space.

14. A very small patch of our
Milky Way galaxy in the
constellation Sagittarius. In
total, our galaxy contains
some 100 billion stars and
100 million black holes.
Any small patch of the sky
shows many distant galaxies.
Each probably contains a
supermassive black hole and
millions of stellar-mass black
holes.

19. • Black holes can detected by their gravitational
effects on nearby stars or by the intense core of
light they produce in the center of galaxies when
astronomers studies the speed of the gases in
the cores of such galaxies.
• By these observations, they calculate the mass
and power of the black holes.

20. KECK
OBSERVATORY
HAWAII

23. OUR MILKY WAY IN VERGE OF EXTINCTION

24. Andromeda
Milky Way
Collision of Galaxies

25. MilkDromeda

27. CAN WE SAFELY ORBIT A BLACK HOLE!
If you launch your spaceship
with low speed, you will spiral
into the black hole.
If you launch your spaceship with
high speed, you will fly into the far
off distance.
There is exactly one launch speed that
will put you on a circular orbit around
the black hole.
If you launch your spaceship with
intermediate speed, you will orbit the
black hole in a complicated pattern
known as a rosetta orbit.

29. Thank you
for your
kind
attention!