Celestial mechanics fix" method used anciently with numbers. Research Artwork Course notes Associations Simulations Celestial mechanics Celestial mechanics is the branch of astronomy that deals with the motions of objects in outer space. Historically, celestial mechanics applies principles of physics (classical mechanics) to astronomical objects, such as stars and planets, to produce ephemeris data. As an astronomical field of study, celestial mechanics includes the sub-fields of orbital mechanics, which deals with the launching and orbits artificial satellites, and lunar theory, a specialty which deals with the complications of the orbit of the Moon. Modern celestial mechanics tends to divide between five broad
Celestial monarch Celestial monarch The celestial monarch ("Hypothymis coelestis") is a species of bird in the family Monarchidae, and one of the most attractive of all the monarch flycatchers, with its spectacular blue crest and large yellow eye-ring (neither of which are illustrated in the facing painting). It is endemic to the Philippines. An alternate name for the celestial monarch is the celestial blue monarch. Two subspecies are recognized: Its natural habitat is subtropical or tropical moist lowland forests. This beautiful insectivore is declining rapidly, with recent surveys revealing its presence at only 10 sites. Widespread and continuing reduction of its lowland