Chapter 2: Worlds in Our Universe

• Activity 1: How Well Do You Know the Worlds in Our Solar System?
• Activity 2: What Is the Scale of the Solar System?
• Activity 3: What Types of Stars are in Our Universe?
• Activity 4: The Life Stories of Two Stars
• Activity 5: What Types of Galaxies and Regions in Galaxies are Conducive to Life?
• Activity 6: How Many Galaxies Are Out There?

Research Hubble Space Telescope
NASA HubbleSite
NASA Hubble Space Telescope
Space Telescope Science Institute

Investigate Stars and Galaxies
Astronomy Picture of the Day (Use Search Function)
NASA Imagine the Universe
NASA Sun Earth Viewer

Investigate Planets and Moons in Our Solar System
Habitable Worlds Web Site
Planetary Photojournal