Astronomy Vocabulary Flashcards

Front

Equator

Back

latitude reference line

Front

Big Bang Theory

Back

began as a single point, expanding since

Front

Fusion (in stars)

Back

process in stars, nuclei combine to form helium, releasing energy

Front

Ellipse

Back

shape; describes planetary orbits

Front

Axis

Back

line for rotation

Front

Orbit

Back

path around another body

Front

Revolution

Back

movement along that path

Front

Fission

Back

splits nucleic, nuclear reaction

Front

Barycenter significance

Back

point between two objects, where two objects balance gravitationally

Front

Rotation

Back

Circular movement around an axis