Aspect. (1) Any curious appearance of an object, especially if the object changes in appearance. (2)The figure formed by a planet with the stars of the constellation which it is in.
Astrologer. One who forecasts the life of a person on the supposition that the stars control it.
Astronomer. One who is skilled in seeing the stars and who knows them.
Atom. A very small particle of matter. See Molecule; Matter.
Attract. To pull toward. The attraction of the Sun and the Earth for each other is due to gravitation.
Attraction. A force which pulls one body to another.
Attraction of Gravitation. A force which pulls all bodies to each other.
Auditory nerve. A nerve that carries the impressions of sound which reach the ear to the brain.
Aurora borealis. The Northern Lights. A glowing light effect which takes place in the Arctic Circle. It can often be seen from our Northern States and sometimes from the Southern States. The same kind of lights appear in the Antarctic Circle. These Southern Lights are called Aurora Australis.
Axes. Plural of axis.