moon
sun
tide
satellite
star
orbit
lunar cycle
rotation
revolution
the rise and fall of Earth's oceans twice a day due to the gravitational pull of the moon
an object in the sky made of very hot spinning gases
natural satellite that revolves around Earth
changes in the moon's appearance as it orbits the Earth; also called phases of the moon
a complete trip around another object
the path an object takes around another object
the spinning of an object on its axis
medium-sized star that is located in the middle of our solar system and is the source of almost all energy on Earth
an object that travels or revolves around another object; can be natural or artificial
