Moon Software iPhone/Android App Moon Phases Calendar Current Moon Phase Moon Phase Module iGoogle Moon Gadget Gravity On The Moon Featured Moon Phases [..]

— This term is a unit-less measure that refers to the how much an object diffusely reflects light from the sun.

— The measurement of the diameter of a distant object from the perspective of the angle resulting between the observer and the object's outer edges. Also known as the 'visual diamet [..]

— Refers to an solar eclipse where the Moon is between the Sun and the Earth, but with the Moon appearing smaller than the Sun to the observer, leaving a bright ring around the circumference [..]

— The length of time that the Moon takes to pass between perigee (or apogee) passages — that is, the 27.55455 day period during which the Moon moves from its closest (or farthest) po [..]

— A calcium-rich rock type found in abundance on the Moon.

— The farthest point from the Sun in a planetary body's orbit.

— The farthest point from the Earth in the Moon's orbit.

— The name for low tide when the Moon is at it's farthest point from the Earth.

— The farthest point from the Moon in an object's orbit around it.