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Transcript of Solar System
With a mean surface temperature of 735 K (462 °C; 863 °F),
Venus is by far the hottest planet in the Solar System.
Venus is known as “Earth’s Evil Twin”. They have a lot in common including mass and orbit. But Venus’s atmosphere is 96% carbon dioxide.
(10% or more is fatal to humans).
Venus is the hottest planet, this is because has atmosphere so thick, it traps all the sun heat in, giving it a runaway greenhouse effect.
Mercury looks like the Earth’s Moon,
its heavy cratered. However unlike the moon, Mercury has a large iron core.
Mercury is the smallest planet in our solar system.
It has no moons.
Mercury takes 59 days to make rotation, a year on Mercury is only 88 Earth’s days long.
Mercury has no clouds, air or atmosphere. And because of this, Mercury sky is always black like the moons.
Its the closest planet to the Sun, but is not the hottest planet in our solar system.
Venus ... is differnet ... rotates clockwise and is the only planet
in our solar system that does so.
Venus rotates very slowly so one day on Venus is 243 days on Earth.
Scientists believe that the moon was formed when a Mars sized object crashed into the Earth more then 4,5 billion years ago.
The collision was so huge that a large spray of debris was injected into space, where is collected together and formed the moon.
The moon used to rotate, but at some point in the past the moon just stopped turning. Now is always displayed one face to the Earth.
Billions years ago the moon was larger on our sky, but as the moon drifts away from us, in the distant future, the moon will look a lot smaller then our sun today. Every year the moon drifts away from Earth by 4 cm.
Over 70% percent of our planet's surface is covered with water,
but we still call it "Earth".
97% of the water on earth is in the oceans.
Mars is called after the Roman god of war because its red color and reminded early observers of blood.
Mars is red color because the soil is composed of iron oxide
or what we common call rust.
(in latin "panic")
(in latin "fear")
The Phoenix mission discovered that Mars has huge deposits of ice underneath the planet’s surface. Water is necessary for life.
Mars Colonists Wanted to Explore Red Planet !
MOONS OF MARS
The asteroid belt is the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets.
Jupiter - the biggest planet in our solar system.
Despite the huge size, Jupiter rotates very quick,
9 hours and 55 minutes to compleate one rotation.
Jupiter is a gass giant. It's composed primarily
of gaseous and liquid matter.
Jupiter takes 12 Earth years to make a complete trip round the Sun.
Jupiter is usually the fourth brightest object in the sky (after the Sun, the Moon and Venus)
The biggest 4 of all 63 moon are:
Saturn is famous for its distinctive rings that were first seen by Galileo
in the beginning of the 17th century.
It’s rings, which can be seen with the unaided eye from Earth, sometimes disappear from sight.
Determining the rotation speed of Saturn was actually very difficult to do. The planet doesn’t have a solid surface, so it’s not like you can watch to see how long it takes for a specific crater to rotate back into view.
Astronomers now agree on an average day of 10 hours,
32 minutes and 35 seconds.
Uranus is the only planet to rotate
on its side; it rotational tilt is very strong – approximately 97.9°
Uranus, the second furthest planet from the Sun, is the coldest planet in our Solar System. Uranus’ temperature can drop to -224°C.
Unlike the other planets, Uranus actually releases less heat than it absorbs from the Sun because its core is much cooler than the cores of the other planets.
Neptune is the most distant planet. This sounds simple, but it’s actually pretty complicated. When it was discovered by in 1846, Neptune became the most distant planet in the Solar System. But then in 1930, Pluto was discovered, and it became the most distant planet. But Pluto’s orbit is very elliptical; and so there are periods when Pluto actually orbits closer to the Sun than Neptune
Neptune has the strongest winds in the Solar System. Think a hurricane is scary? Imagine a hurricane with winds that go up to 2,100 km/hour.
From its discovery in 1930 until 2006, Pluto was classified as a planet. But not any more.
Today it is classified as the
"dwarf planet" in the Solar System
When Pluto was considered a planet, it was the coldest of all the planets. Temperatures on Pluto can range from -240° to -218° C.