The Mysteries The Mysteries of Spaceof Space
World Space WeekWorld Space Week
October 2013October 2013
Our Universe…. 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 mysteriesIt is full of mysteries
Why did the dinosaurs die?Why did the dinosaurs die?
They lived on the earth They lived on the earth millions years agomillions 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.
CometsComets
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.
Comet Hale-Bopp, Croatia, 1997
Comet Holmes, 2007
Halley's comet, named after the astronomer Edmund Halley for calculating its orbit. Photo of 1910
Halley's Comet appeared at The Battle of Hastings in 1066
MeteoritesMeteoritesIt 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) Star (Meteor) ShowersShowers
The next meteor shower is the Orionids
on the night of October 21
Name Date of Peak
Moon
Quadrantids
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
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
Lake Chebarkul
A fragment of the Russian meteorite
UFOUFO
Unidentified Flying Object
Lots and lots and lots…
AliensAliens
What do they want?What do they want?
The SunThe 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 StormsBlasts In the Sun or Sun Storms
The Sun can send billions of tons of particles into space.
They can reach the Earth one to three days later
August 21, 2013
The Sun's heat and radiation produce a wind called the Solar Wind.
Solar wind particles interacting with
Earth's magnetosphere.
Solar Wind
The solar wind is made up of charged particles called plasma
Solar flares – вспышки на солнце
A solar prominence – солнечный протуберанец
Coronal mass ejection –Выброс вещества из
солнечной короны
AsteroidsAsteroids
Asteroids are small planets. The larger ones are called planetoids
The Birth of AsteroidsThe 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.
Asteroid Belt – пояс астероидовAsteroids in space
Where are the asteroids?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!Danger!
Danger! Danger! Near Earth Asteroids : Near Earth Asteroids : TheyThey keep on increasing…. keep on increasing….
Asteroid 4179 Toutatis is a dangerous object that has passed within 2.3 lunar distances.
Near-Earth asteroidsclassification.
Asteroid 1998 QE2 to Sail Past Earth Nine Times Larger Than Cruise Ship.
The orbit of asteroid 1998 QE2
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