Astronomy

Observatories

• Arecibo Radio Telescope, Puerto Rico
• Greenwich, England
• Lick Observatory, California
• McDonald Observatory, Texas
• Naval Observatory, Washington, D. C.
• Palomar, California
• Stonehenge, England

Planetariums

• Adler Planetarium

Constellations

• Leo
• Orion
• Ursa Major

The Sun

• Sunsets
• The Midnight Sun

Planets

• Mercury
• Mars
• Saturn
• Uranus

The Moon

Comets

• Morehouse Comet

Asteroids

• Asteroid Ida

Meteors