Term
|
Definition
| How many degrees above the horizon it is (0° to 90°) |
|
|
Term
|
Definition
| When the Moon is lined up with the Sun, a bright right will be visible around the Moon |
|
|
Term
|
Definition
| When Earth is farthest from the Sun, it moves the slowes |
|
|
Term
|
Definition
| The Sun crosses the celestial equator moving southward around September 22 |
|
|
Term
|
Definition
| How many degrees along the horizon it is and corresponds to the compass direction |
|
|
Term
|
Definition
| An imaginary circle around the sky directly above the Earth's equator |
|
|
Term
|
Definition
| An imaginary sphere surrounding Earth |
|
|
Term
|
Definition
| Stars within an angular distance from the NCP equal to the observer's latitude |
|
|
Term
|
Definition
| Latitude lines that are projected onto the sky |
|
|
Term
|
Definition
| The yearly path of the Sun through the stars |
|
|
Term
|
Definition
| Explains why, according to your clock, the earliest sunset and latest sunrise is not at the winter solstice |
|
|
Term
|
Definition
| Number of degrees north and south |
|
|
Term
|
Definition
| When the Sun is at it's highest point based on your position |
|
|
Term
|
Definition
| Number of degrees east and west |
|
|
Term
|
Definition
| When the Earth covers the Moon |
|
|
Term
|
Definition
|
|
Term
|
Definition
| The arc that goes through the north point on the horizon, zenith, and south point on the horizon |
|
|
Term
| North And South Celestial Poles |
|
Definition
| The points in the sky directly above the geographic north and south pole |
|
|
Term
|
Definition
| The region of partial shadow |
|
|
Term
|
Definition
| When Earth is closest to the Sun, it moves the quickest |
|
|
Term
|
Definition
| When the Sun's vernal equinox point slowly shifts westward over time |
|
|
Term
|
Definition
|
|
Term
|
Definition
| When a planet is moving backward |
|
|
Term
|
Definition
| Longitude lines that are projected onto the sky |
|
|
Term
|
Definition
| Spring and Fall based on the equinoxes |
|
|
Term
|
Definition
| How the stars move around the Earth in 23 hours 56 minutes |
|
|
Term
|
Definition
| When the Moon returns to the same position with respect to the background stars every 27.323 days |
|
|
Term
|
Definition
| The time required for the constellations to complete one 360° cycle around the sky and to return to their original point on our sky |
|
|
Term
|
Definition
| The Sun moving from noon to noon in 24 hours |
|
|
Term
|
Definition
| When the Moon covers up the Sun |
|
|
Term
|
Definition
| The farthest northern point above the celestial equator |
|
|
Term
|
Definition
| From new moon to new moon |
|
|
Term
|
Definition
| Different 15° regions where each section has the same time |
|
|
Term
|
Definition
| The time interval between two successive vernal equinoxes |
|
|
Term
|
Definition
| The region of total shadow |
|
|
Term
|
Definition
| The Sun crosses the celestial equator moving northward around March 21 |
|
|
Term
|
Definition
| The farthest southern point above the celestial equator |
|
|
Term
|
Definition
| The point straight overhead on the celestial sphere for any observer |
|
|
