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Planet Facts:




Mercury:




The sun appears 2 and a half times larger in Mercury's sky compared to the Earth's.

If you weigh 100 pounds on Earth, you would only weigh 37 pounds on Mercury.

Mercury has virtually no atmosphere. It however has small traces of an atmosphere which consists minute quantities of Hydrogen, Oxygen, Sodium, Potassium and argon.

Because of the lack of atmosphere, Mercury's sky is black and the stars probably can be seen during the day.

It takes less than 88 Earth days for Mercury to orbit around the sun.

Because of a lack of an atmosphere, the temperature rises above 800°F while on the dark side it falls rapidly to -300°F.

Mercury is the most iron rich planet in the Solar System with an iron core like Earth.

The surface of Mercury is heavily cratered, looking much like our moon.

Mercury rotates slowly on its axis. It completes one rotation every 59 Earth days.

As a result of the planet's slow rotation on its axis and rapid movement around the sun, a day on Mercury—that is, the interval between one sunrise and the next—lasts about 180 Earth days.

The sun's rays are about seven times as strong on Mercury as they are on the Earth.




Mars:




Mars is red because it is rusty. There is a lot of iron in the soil, and the air on Mars has made it turn red-just like rusty iron on Earth.

One of Mars' moons, Phobos, is moving closer and closer to Mars. Scientists think that one day it will crash into Mars.

Mars has the tallest Volcano in the Solar System named Olympus Mons and it is 15 miles high which is three times the height of Mount Everest.

Like Earth, the poles of Mars are covered in ice. The ice becomes thicker in the winter.

Mars orbits the sun every 687 Earth days.

The Martian “day” is about half a hour longer than Earth.

At its brightest, Mars outshines every other planet apart from Venus.

The thin atmosphere of Mars is made of mostly carbon dioxide.

A hundred pound man would weight 38 pounds on Mars.

In 1996 NASA, while studying the ALH 84001 meteorite of Martian origin found in Antarctica in 1984, announced that fossilized micro-organisms from Mars might be present in it.

Valleys and Canyons on Mars suggest that the planet once had large amounts of surface water.

In winter, nighttime temperatures on Mars can drop as low as -191°F.




Venus:

Venus is known as Earths' twin sister because of its similar size and proximity to each other.

Its atmosphere is made up mostly of carbon dioxide.

Venus rotates so slowly that it orbits the sun faster than it can make one whole rotation on its axis. In other words, Venus has a longer day than year.

It takes 243 days for Venus to make a rotation.

And it takes 224 days for Venus to orbit around the sun.

Venus is the most widely explored planet aside from our own Earth. Numerous space probes have been sent to Venus to gather data and some have landed on the surface.

It is believed that Venus used to have bodies of water similar to Earth, but dried up over a period of 300 million years when the sun began admitting more solar energy after the sun's infancy stage.

The clouds of Venus is filled with sulfuric acid.

Venus has mountains that are higher than Earth. Maat Mons is more than 5 miles high.

Venus is the brightest planet viewed from Earth.

The planet rotates from East to West. The only other planet that does this is Uranus.