How Far Is a Light-Year? (Part 3)

What You'll Learn

Light from the sun takes about 8 minutes to reach Earth. A light-year is the distance light travels in one year—about 9.5 trillion kilometers.

Step 1 — Read

Study the diagram and label the parts you recognize.

Step 2 — Do

Use a flashlight, a large ball, and a small ball to model eclipses. Show both a solar eclipse and a lunar eclipse.

Step 3 — Observe

Use your senses (except taste) to describe what you notice.

Step 4 — Record

Write a summary of your findings in 3-5 sentences.

1 of 3

Which planet is known as the Red Planet?