Space Vocabulary Flashcards
Orbit
the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution
The sun and its family of orbiting plants and moons and other objects
Solar system
Half of the moon is illuminated
Quarter moon
The entire surface of the moon is not illuminated
New moon
Average distance from the sun which is 93,000,000 miles
Astronomical unit
The motion of one body around another,such as the earth in its orbit around the sun.
Revolution
The illuminated surface is less than a quarter illuminated.
Crescent moon
a region of dark shadow that may surround a dark central region
Penumbra
A large dark plain solidified lava on the moon.
Mare
Millions and billions of stars hold together in a group by their own gravity.
Galaxy
The dark central region of a shadow such as a complete shadow cast by an object.
Umbra
A body that produces a coma of gas and dust ,a small icy body that orbits the sun.
Comet
An event during one object in space cast a shadow onto another
Eclipse
More then half but less than fully illuminated
Gibbous
The path of an object in space as it moves around another object due to gravity
Orbit