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This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.

In this interdisciplinary activity, learners create a Space Weather Action Center (SWAC) to monitor solar storms and develop real SWAC news reports.

This demonstration activity models how Venus appears from Earth.

In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model.

In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

In this sunny day, outdoor activity, learners observe changes in shadows over time. The activity also helps to develop a sense of the Earth's motion.

Learners investigate why the Sun and Moon appear the same size in the sky even though the Sun is over 400 times larger in diameter.

In this activity, learners explore how distance can affect the way we perceive the size of an object.