Front

the Sun and everything that orbits it

Back

Solar System

Front

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Back

Planets in order

Front

Sun

Back

the star of our solar system

Front

Only natural satellite, reflects Sun's light

Back

Earth's Moon

Front

Caused by Moon’s position relative to Earth and Sun

Back

Moon's phases

Front

Force attracting objects, keeps planets in orbit

Back

Gravity

Front

Depends on mass and distance between objects

Back

Gravity strength

Front

Spiral galaxy, billions of stars

Back

Milky Way Galaxy

Front

Milky band of light in night sky

Back

Milky Way appearance

Front

Regions with strong gravitational pull, nothing escapes

Back

Black Holes