Many people work in a zoo. People called keepers feed the animals and keep them and their cages clean. Animal doctors, called veterinarians, check the animals to keep them healthy and care for them...
The biggest dinosaurs
You could have walked beneath an Apatosaurus and your head wouldn't even have touched its stomach. An Apatosaurus was as long as four big elephants standing in a line. The word Apatosaurus means...
Many-Legged Creatures
Any sunny, summer day, in almost any back yard, empty lot, or lawn, you can see dozens of wild animals! You're sure to see the eight-legged creature that catches other animals in a trap. It's a...
Animal groups
To make it easier to study animals, scientists have arranged them into groups. All the animals in each group are alike in one or more important ways. Mammals If an animal drinks milk when it's a...
Books to Read
If you like to read about the world and space, you'll find a wide variety of books to read and enjoy. A few of them are fisted below. Your school or your public library will have many others. Ages 5...
The Milky Way
> Milky Way Galaxy > > Our sun is part of a gigantic cloud of stars called the Milky Way > Galaxy. On a clear summer night you can sometimes see a bright haze in part of the sky. This haze is...
Exploding stars!
Nearly a thousand years ago, in the year 1054, a new star suddenly appeared in the sky. It was tremendously bright---so bright it could be seen even in daytime. For two years, the strange new star...
The sun’s family
The planet earth is part of a family. It is one of nine planets that belong to the sun. We can see some of these planets at night, shining like bright stars. Like the earth and the moon, the other...
Shapes in the sky
stratus clouds There are many different kinds of clouds, and each kind has a name. Most clouds are named for their shapes. The clouds that look like great sheets pulled across the sky are called...
Where a river meets the sea
What has its head at one end and its mouth at the other end? A river! The place where a river begins is called its head. And the place where it comes to an end, where it flows into a lake or the...
