Asteroids and Comets

What You'll Learn

Asteroids are rocky objects orbiting the sun, mostly found in the asteroid belt between Mars and Jupiter. Comets are icy objects that develop tails when they approach the sun.

Key Words

outer planets
atmosphere

Steps

Step 1 — Read

Review the background information on Space before starting.

Step 2 — Do

Track the moon's phase each night for two weeks. Draw what you see and identify the pattern.

Step 3 — Observe

Watch carefully for any changes and note the time.

Step 4 — Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

What is the closest star to Earth?