Space Flashcards
The path of an object in space as it moves around another object due to gravity _
Orbit
The Sun and its family of orbiting planets and moons and other objects. _
Solar System
Millions and billions of stars held together in a group by their own gravity.
Galaxy
Space and all the matter and energy in it.
Universe
An object that orbits a more massive object.
Satellite
A round pit left behind on the surface of a planet after a smaller object strikes the surface.
Impact Crater
An imaginary line about which a turning body such as Earth rotates
Rotation
The motion of one body around another, such as the Earth in its orbit around the Sun.
Revolution
One of a pattern of temperature changes and other weather trends over the course of a year
Season
In an orbit, a position and time in which sun shines equally on both hemispheres.
Equinox
In an orbit, a position and time during which one hemisphere receives the maximum sunlight.
Solstice
A large dark plain of solidified lava on the moon.
Mare
An event during which one object in space casts a shadow onto another
Eclipse
The dark central region of a shadow such as the cone of complete shadow cast by an object
Umbra
A region of lighter shadow that may surround a dark central region
Penumbra