| Term | Definition |
|
astronomy |
the study of the moon, stars, and other objects in space |
|
axis |
an imaginary line that passes through Earth about which the Earth rotates |
|
rotation |
the spinning motion of a planet about its axis |
|
revolution |
the movement of an object around another object |
|
orbit |
the PATH of an object as it revolves around another object |
|
latitude |
the distance North or South of the equator |
|
solstice |
the 2 days of the year when the sun is overhead at either 23.5 degrees North or South |
|
equinox |
the 2 days of the year on which niether hemisphere is tilted toward or away from the sun |
|
vernal equinox |
The first day of Spring in the Northern hemisphere ( around March 22) |
|
autumnal equinox |
The first day of Fall int he Northern hemisphere (around Sept. 22) |