The Sky From Earth
An object that orbits a planet
Satellite
The spinning motion of a planet on its axis
Rotation
A push or pull exerted on an object
Force
The darkest part of a shadow
Umbra
The periodic rise and fall of the level of water in the ocean
Tide
A pattern or grouping of stars that people imagine to represent a figure or object
Constellation
The movement of an object around another object
Revolution
The tendency of an object to resist a change in motion
Inertia
One of the different apparent shapes of the moon as seen from Earth
Phase
A large round pit caused by the impact of a meteoroid
A streak of light in the sky produced by the burning of a meteoroid
Meteor
The path of an object as it revolves around another object in space
Orbit
The scientific law that states every object in the universe attracts every other object
Law of universal gravitation
The partial or total blocking of one object in space by another
Eclipse
A chunk of rock or dust in space, generally smaller than an asteroid
Meteoroid
An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit
Planet
Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun
Equinox
A measure of the force of gravity acting on an object
Weight
The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth
Solar Eclipse
Dark, flat areas on the moon’s surface formed from huge ancient lava flows
Maria
A loose collection of ice and dust that orbits the sun, typically in a long, narrow orbit
Comet
Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator
Solstice
The scientific law that states an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force
Newton’s first law of motion
The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
The tide with the least difference between consecutive low and high tides
Neap Tide