Space vocabulary Flashcards
The gradual increase of the surface of the moon
Waxing
An event during which one object in space casts a shadow onto another
Comet
A region of a lighter that may surround a dark central region
Penumbra
Half moon is illuminated
Quarter moon
A large dark plain solidified lava on the moon
Mare
The entire surface of the moon is illuminated
Full moon
An oval or flattened circle
Ellipse
Millions and billions of stars held together in a group by there own gravity
Galaxy
In an orbit a position and time during which one hemisphere receives the maximum sunlight
Solstice
An object that orbits a more massive object
Satellite
A brief streak of light produced by a partical entering earths atmosphere at high speed
Meteor
The path of an object in space as it moves around another object due to gravity
Orbit
A sun centered theory of the universe
Heliocentric theory
An imaginary line about which turning body such as earth
Axis of rotation
More than half but less than fully illuminated
Gibbous moon
