# Earth Statistics

Planetary Symbol: Surface Gravity: 9.78 m/s^2 12,753 km (7,926 miles) 24 hrs 5.98x10^24 kilograms(6.5e21 tons) 23 hrs 56 min 5,515 kg/m^3 365 days 5 hrs 146 million km (91 million miles) 23o 27" 152 million km (94.5 million miles) -89o C to 57.7o C (-128o F to 136o F) 1.0 AU 287K 1 (the Moon)

Comparative Planetary Statistics -- in table form

Comparative Orbital Statistics -- in table form

## Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

## What is the distance from the Earth to the Sun when the Earth is at perihelion and when it is at aphelion? At what month is the Earth closest to the Sun? What is the circumference of the Earth? How fast is the Earth moving about its axis; how about around the Sun?

If a body (like the Earth) is orbiting around the Sun, we say it is closest to the Sun at perihelion and farthest from the Sun at aphelion. In 2000, perihelion for the Earth was on January 3, 2000, and...more

## Eccentricity of an Orbit

You may think that most objects in space that orbit something else move in circles, but that isn't the case. Although some objects follow circular orbits, most orbits are shaped more like "stretched...more

## Albedo

This picture of the Earth surface was taken from high above the planet in the International Space Station. In this view from above, we can see that there are lots of different things that cover the Earth....more

## Desert Birds

Like the other creatures of the desert, birds come up with interesting ways to survive in the harsh climate. The sandgrouse has special feathers that soak up water. It can then carry the water to its...more

## The Desert Biome

Deserts are full of interesting questions. How can anything survive in a place with hardly any water? Why is it so dry to begin with? You can find at least one desert on every continent except Europe....more

## Desert Insects and Arachnids

You can find insects almost anywhere in the world. So it should be of no surprise that there are plenty of insects in the desert. One of the most common and destructive pests is the locust. A locust is...more

## Desert Mammals

There are several species of mammals in the desert. They range in size from a few inches to several feet in length. Like other desert wildlife, mammals have to find ways to stay cool and drink plenty...more

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