Front

The Earth revolves around its _____ every 24 hours.

Back

Axis

Front

Celestial body in elliptical orbit around a star?

Back

Planet

Front

Action of rotating around an axis or center?

Back

Rotation

Front

Obscuring light from one celestial body by another's passage.

Back

Eclipse

Front

Remark or comment based on what one has seen or heard.

Back

Observation

Front

Curved path of a celestial object around a star, planet, or moon.

Back

Orbit

Front

A celestial body orbiting a planet, including major and minor planets.

Back

Moon

Front

A system of millions or billions of stars, along with gas and dust, held by gravity.

Back

Galaxy

Front

Aspects of the moon or a planet based on illumination: new moon, first quarter, full moon, last quarter.

Back

Phase

Front

Orbital motion around another object.

Back

Revolution