In this distances in space worksheet, students learn about astronomical units and light years as measurements for great distances. Students use both of these units of measurements to solve five problems.

In this planets in space activity, students calculate their weight on the 9 planets plus calculate the distance of the planets from the sun in astronomical units. This activity has 6 fill in the blank and 3 short answer questions.

Learners explore the transit of Venus and the information that this minieclipse provides about the distance between the Earth and the sun. They create their own astronomical units.