A dimming or absence of light from one heavenly body by another is called an eclipse. Eclipses can be temporary or permanent.
c.planet
moon
Perturbation
The duration of The Heavenly Body is 1.58 hours.
Yes
c.planet
Occultation - when a bright object (like a star) is hidden behind a dark object (like a planet). Super-sensitive light-detectors in the Kepler Space Telescope can even detect the minuscule dimming of a star being occulted by a planet of that distant solar system. Using this method, we've detected hundreds, perhaps thousands, of "extra-solar" planets. In fact, it begins to seem that half or more of all stars might have SOME kind of planets orbiting them.
moon
elliptical
Some do and some don't. Some planets have more then one moon. By definition a heavenly body that circulate another heavenly body is called a moon. A heavenly body that circulates a star (sun) is called a planet.
An eclipse or partial eclipse.
Perturbation
To brighten anything,light needs to reflect from that medium.Space has nothing,except some heavenly bodies.When light strikes a heavenly body, it probably brightens it.If their is nothing,how light can brighten it?
. . . or from any heavenly body is called albedo.
The North Star The Pole Star Polaris
The duration of The Heavenly Body is 1.58 hours.
An eclipse takes place when one heavenly body such as a moon or planet moves into the shadow of another heavenly body. There are two types of eclipses on Earth: an eclipse of the moon and an eclipse of the sun.