Transcript - SlideBoom

The Mysteries
of Space
World Space Week
October 2013
Our Universe….
The universe contains
around 50,000,000,000
galaxies, each of which
has between
100,000,000,000
and 1,000,000,000,000
stars.
It is full of mysteries
Why did the dinosaurs die?
They lived on the earth
millions years ago
Many years ago a comet stroke Yucatan,
forming the giant crater and causing
the extinction of dinosaurs.
(Image courtesy of Don Davis/NASA)
The giant Crater
This 150-kilometer-wide crater lies just off the Yucatan peninsula.
Scientists calculate that it was blasted into Earth
by a 10-kilometer-wide asteroid or comet traveling
30 kilometers per second -- 150 times faster than a jet airliner.
Comets
Comets are cosmic snowballs of frozen gases, rock and dust roughly the size of a
small town. When a comet's orbit brings it close to the sun, it heats up and spews
dust and gases into a giant glowing head larger than most planets. The dust and
gases form a tail that stretches away from the sun for millions of kilometers.
Halley's comet,
named after the
astronomer
Edmund Halley for
calculating its orbit.
Photo of 1910
Comet Holmes, 2007
Comet Hale-Bopp,
Croatia, 1997
Halley's Comet appeared at
The Battle of Hastings in 1066
Meteorites
It is an object that has come from somewhere
in space. A meteorite can be very small
or extremely large.
Willamete Meteorite
discovered in the
US state of Oregon
Canyon Diablo iron meteorite
Fragment, 2,641 gra
The largest known meteorite.
Star (Meteor)
Showers
The next meteor shower is
the Orionids
on the night of October 21
Name
Date of
Peak
Moon
Quadrantid
s
Night of
January 2
Sets shortly
before dawn
Lyrids
Night of April
21
In view most
of the night
Eta
Aquarids
Nights of May
4/5
Early
morning
crescent
Perseids
Nights of
August 11/12
Sets after
midnight
Orionids
Night of
October 21
In view most
of the night
Leonids
Night of
November 16
Full
Geminids
Nights of
December
12/13
In view most
of the night
Timetable of meteor showers
Lake Chebarkul
The gigantic meteorite crashed into the central Russian area of Chelyabinsk
on February 15, 2013. It was the largest meteorite to hit the Earth
in more than 100 years
A fragment of the Russian meteorite
UFO
Unidentified Flying Object
Lots
and lots
and lots…
Aliens
What do they want?
The Sun
The Sun is the star at the center of
the Solar System.
It is almost perfectly spherical and
consists of hot plasma.
It has a diameter of about 1,392,684 km.
It was formed
about 4.6 billion years ago
Every now and then the Sun blasts out
HUGE amounts of material from
its atmosphere
Blasts In the Sun or Sun
Storms
August 21, 2013
The Sun can send billions of tons of particles into space.
They can reach the Earth one to three days later
Solar Wind
The solar wind is made up of
charged particles called plasma
The Sun's heat and radiation produce
a wind called the Solar Wind.
Solar wind particles
interacting with
Earth's magnetosphere.
Solar flares – вспышки на солнце
A solar prominence – солнечный протуберанец
Coronal mass ejection –
Выброс вещества из
солнечной короны
Asteroids
Asteroids are small planets. The larger ones are called planetoids
The Birth of Asteroids
Over the history of our solar system, catastrophic collisions
between asteroids located in the belt between Mars and Jupiter
have formed families of objects on similar orbits around the sun.
What is an asteroid?
An asteroid is a large rock in outer space. Some asteroids can be very large,
while others are as small as a grain of sand. Due to their smaller size,
asteroids do not have enough gravity to pull themselves into the shape
of a ball. Astronomers groupasteroids into different categories base on the
way they reflect sunlight.
Asteroids in space
Asteroid Belt – пояс астероидов
Where are the asteroids?
Plot of inner Solar System showing main asteroid belt between Mars and
Jupiter Sun is at center, blue circles represent (from center moving outward) the
orbits of Earth (blue), Mars (red), and Jupiter (green).
Danger!
Near Earth Asteroids : They
keep on increasing….
Asteroid 1998 QE2 to Sail Past Earth
Nine Times Larger Than Cruise Ship.
Asteroid 4179 Toutatis
The orbit of asteroid 1998 QE2
Near-Earth asteroids
is a dangerous object
classification.
that has passed within
2.3 lunar distances.