Basic Astronomy and Physics Concepts

Front

Gravity

Back

A force that attracts the body toward the center of the Earth

Front

Celestial objects

Back

All objects observed in the sky during the day or night outside of earth's atmosphere

Front

Density

Back

The measurement of how tightly a material is packed together. Defined as mass per volume

Front

Nuclear fusion

Back

The process by which light elements join to form heavier elements while releasing energy

Front

Constellations

Back

A group of stars visible in the night sky that appear to make a pattern.