Scale distances in space

In this activity, students use a scale model of the Earth and identify altitudes of various satellites. They then use ...

In this activity, students use a scale model of the Earth and identify altitudes of various satellites. They then use ...

From the universe itself down to the tiniest subatomic particle, objects in our world exist in a mind-boggling array of ...

Distances in space are really, really big. The Voyager 1 spacecraft is heading out of our Solar System at 62,000 ...