Mathematicians used computers to help plan and launch this space shuttle. Far, far above the blue and white globe of the Earth, a strange machine, shaped much like a windmill, rushes out into the...
People who work with numbers and shapes
The astronomer scans the depths of space To find an unknown star. But how will he know its distance? Mathematics soon tells him how far! The engineer plans a gleaming bridge, To span a broad, blue...
A moving numbers game
You can play this game by yourself, on the floor or on a table. You need only five playing cards---an ace, 2, 3, 4, and 5. Lay the cards out just as they are shown in the picture at the top of this...
“Something” for everyone
What's in the package? You won't know for sure until you open it---but it's fun to guess. You can tell about how big the present inside the wrapping paper is. And you can tell about how heavy it...
Putting electricity to work
> It may look a bit like a dragon, and it may > > roar like one---but it's really only a vacuum cleaner. And the thing > that makes it gobble > > up dirt from a rug is an electric fan! > > When...
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...
Studying the stars
What is the shape of the universe? Why do stars sometimes explode? Is there life on other planets? Scientists called astronomers and astrophysicists try to answer these and other questions. Most...
Waves from space
Right this minute you're being hit by "bullets" from outer space! Space is full of waves. These aren't the kind of waves you see on an ocean, of course. They are waves of radiation. Radiation is...
Other galaxies
Our galaxy, the Milky Way, has more than a hundred billion stars. But it is not the only such "cloud" of stars in space. There are at least a billion other galaxies, and probably more, and each of...
“Shooting stars”
A big lump of rock and metal---a meteoroid---rushes through the blackness of space. For billions of years, ever since the planets were formed, it has been zipping around and around the sun. But now...
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