Our Solar System National College Iasi. Our Planets Sun Mercury Venus Earth Earth`s Moon Mars Jupiter Saturn Uranus Neptune Pluto Others Asteroids Meteor.

Our Solar System

National College Iasi

Our Planets

•Sun•Mercury•Venus•Earth•Earth`s Moon•Mars•Jupiter•Saturn•Uranus•Neptune•Pluto Others

•Asteroids•Meteor and Meteorites•Comets


SunThe Sun is the star at the center of the Solar System

The Sun's color is white, although from the surface of the Earth it may appear yellow because of atmospheric scattering of blue light

The sun is made up entirely of gase light

The sun, like Earth, is magnetic

The sun was born about 4.6 billion years ago

The inside of the sun and most of its atmosphere consist of plasma



Mercury

Mercury has very little atmosphere to stop impacts

it is covered with craters

Mercury’s surface is overall very similar in appearance to that of the Moon

The orbit of Mercury has the highest eccentricity of all the Solar System planets



Venusis the brightest of the planets known to the ancients

it shows phases when viewed with a telescope from the perspective of Earth

Venus is only slightly smaller than Earth

There are no small craters on Venus

Venus is now quite dry

Venus has no magnetic field, perhaps because of its slow rotation.

Venus has no satellitesNational College Iasi


Earthis the third planet from the Sun and the densest and fifth-largest of the eight planets in the Solar System

Home to millions of species including humans, Earth is currently the only place where life is known to exist

Earth's outer surface is divided into several rigid segments

Earth interacts with other objects in space, especially the Sun and the Moon

The planet is expected to continue supporting life for at least another 500 million years



Earth`s MoonIt is the second brightest object in the sky after the Sun

The Moon was first visited by the Soviet spacecraft Luna 2 in 1959

there is no "dark side" of the Moon

The Moon has no atmosphere

Most rocks on the surface of the Moon seem to be between 4.6 and 3 billion years old

The Moon has no global magnetic field

With no atmosphere and no magnetic field, the Moon's surface is exposed directly to the solar wind



Mars

is smaller than Earth and Venus

It possesses an atmosphere of mostly carbon dioxide

Its surface, shows geological activity that may have persisted until as recently as 2 million years ago

Its red colour comes from iron oxide in its soil



Jupiter

is 2.5 times the mass of all the other planets put together

It is composed largely of hydrogen and helium

Jupiter has 63 known satellites

Ganymede, the largest satellite in the Solar System, is larger than Mercury



Saturn

Saturn distinguished by its extensive ring system

Saturn has 60% of Jupiter's volume

The rings of Saturn are made up of small ice and rock particles

Saturn has 62 confirmed satellites



Uranus

is the lightest of the outer planets

Uniquely among the planets, it orbits the Sun on its side

It has a much colder core than the other gas giants

radiates very little heat into space

Uranus has 27 known satellites



Neptune Neptune, though slightly smaller than Uranus, is more massive and therefore more dense

It radiates more internal heat, but not as much as Jupiter or Saturn

Neptune has 13 known satellites

is accompanied in its orbit by a number of minor planets, termed Neptune Trojans



Plutois the second most massive known dwarf planet in the Solar System

is now considered the largest member of a distinct population known as the Kuiper belt

is composed primarily of rock and ice and is relatively small

Pluto and its largest moon, Charon, are sometimes treated as a binary system because the barycentre of their orbits does not lie within either body

has two known smaller moons, Nix and Hydra



Ptolemy's "planetary spheres”"

Modern the Moon Mercury Venus The Sun Mars Jupiter Saturn

MedievalEurope

☾ LVNA ☿MERCVRI

VS

♀VENVS

☉ SOL ♂MARS

♃IVPITER

♄SATVRNV

S


AsteroidsAsteroids are mostly small Solar System bodies composed mainly of refractory rocky and metallic minerals

The main asteroid belt occupies the orbit between Mars and Jupiter

Asteroids range in size from hundreds of kilometres across to microscopic

The asteroid belt contains tens of thousands, possibly millions, of objects over one kilometre in diameter



Meteor and Meteorites

A meteorite is a natural object originating in outer space that survives impact with the Earth's surface

Meteorites can be big or small

have been found on the Moon and Mars

are always named for the place where they were found, usually a nearby town or geographic feature



CometsComets are small Solar System bodies, typically only a few kilometres across, composed largely of volatile ices

They have highly eccentric orbits

Short-period comets have orbits lasting less than two hundred years

Long-period comets have orbits lasting thousands of years

Old comets that have had most of their volatiles driven out by solar warming are often categorised as asteroids



Attractions! Black Hole

click here for detailshttp://www.nasa.gov/multimedia/videogallery/index.html


The End!


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Our Solar System National College Iasi. Our Planets Sun Mercury Venus Earth Earth`s Moon Mars Jupiter Saturn Uranus Neptune Pluto Others Asteroids Meteor.

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