Search
Close this search box.

What keeps them up?

How do an airplane's wings help it stay in the air? What keeps a satellite up? Airplane wings have a special shape. They are curved on top and straight on the bottom. This shape is what helps lift...

A tug from the earth

Imagine floating through the air, standing on the ceiling, or leaping upstairs in one big bound! An astronaut traveling through space can do all of these things. But on the earth, you can't. You...

The cloud in space

When Rick's uncle came for his usual Sunday visit, Rick was waiting for him at the door. Uncle Frank was a scientist---an astronomer---and Rick had an important question to ask him. "Uncle Frank,...

The seven days myth

"What is the very oldest story you know?" Jane asked her grandmother. Her grandmother thought for a moment. "I guess it must be the story of the Creation, from the Bible." "How old is it?" Jane...

Tide in, tide out

When the tide is in, a beach may be covered with water. When the tide goes out, tiny pools of water, often with a few sea creatures in them, are left among the rocks. "Get all the cargo aboard....