MERCURY 

Planet mercury looks very like our moon. It's about the same size and it's covered in craters, where bits of space rock have crash-landed on it's surface. The biggest crater is the Caloris Basin, which is about 800 miles across. Mercury also has huge plains, rolling hills, deep gorges, chasms, and cliffs.

Mercury is only about a third size of the Earth, but Pluto is even smaller. If you could put them on the scales, it would take 21 Plutos to balance one Mercury.

Mercury is the planet closest to the Sun, but its neighbor Venus is even hotter, because it has clouds to keep in the heat.The surface of Mercury is 662 degree F during the day  and -274 during the night.

Mercury doesn't  have any weather, because it has no air and hardly any atmosphere. that means there are no clouds to shield the surface of the planet from the baking-hot Sun during thew day, or to keep in the heat night. There is o wind or rain on Mercury, either.

Mercury is the fastest planet. It zooms around the Sun in just 88 days, at an incredible 107,000 mph. That makes faster than any space rocket ever invented.

 In deserts here on Earth, heat that has traveled 93 million miles from the sun can be hot enough to fry an egg. The sun's surface is a super-hot 10,832 degree F, and its center or core is even hotter.

The sun is a star- a gigantic ball of burning gas. it has been shining for about five billion years.


Not even sunglasses fully protect your eyes from the sun's dangerous ultraviolet (UV) rays. UV can burn your eyes and make you blind. If you want to see the Sun safely, ask an adult to show you how to project its image on a paper.

The sun is not the same all over. Some areas of its surface are darker. These spots are little pockets that are slightly cooler. Of course, sunspots are only 'little' compared to the  Sun- some grow to be as large as Jupiter, the biggest planet in the Solar System.

When there's a total eclipse. This happens when the Moon's path takes it between the Earth and the Sun, and the Moon's shadow across the surface of the Earth.

Our solar system .
The solar system is centered around the Sun, the shining ball in the sky. It includes a family of nine planets orbiting (traveling around) the Sun, as well as the moons of these planets, and smaller objects, such as comets, asteroids, and bits of space rock. The powerful pull of an invisible force called gravity from the Sun stops these bodies from flying off into deepest space.

MERCURY- distance from Sun: 36 million miles, Diameter 3.024 miles
VENUS- distance from Sun :67 million mils, Diameter 7,504 miles
EARTH- distance from Sun: 93 million miles, Diameter 7.909 miles
MARS-  distance from Sun : 141 ,million miles, Diameter 4,214 miles
JUPITER- distance from Sun: 482 million miles, Diameter 88,650 miles
SATURN- distance from Sun: 885 million miles, Diameter 80,389 miles
URANUS- distance from Sun : 1,179 million miles, Diameter 31,639 miles
NEPTUNE- distance from Sun: 2,788 million miles, Diameter 30,71 miles


Saturn's not the only planet with rings . Saturn's rings are the easiest to see, but Neptune, Jupiter and Uranus have them, too. Saturn has seven main rings, and then hundreds of thinner rings, called ringlets