astro-, astr- +
(Greek: star, stars, star shaped; also pertaining to outer space)
2. The point at which an object, such as a planet or comet, is farthest from the star it is orbiting.
The orbits of planets moving around the sun, of satellites moving around planets, and of stars moving around each other are never circular, but they are always elliptical or rounded like an egg.
Because of such oval movements, there will be one point in the orbits of all of the astronomical bodies when they are farther apart than at any other time in their orbits; so, in the situations of two stars (binary system), this point of greatest distance is called apastron from two Greek elements: apo-, "far" and astron, "star".
2. Someone who studies the ancient or traditional astronomies in their cultural context, utilising archaeological and anthropological evidence.
2. The study of ancient or traditional astronomies in their cultural context, utilising archaeological and anthropological evidence.
2. The study of the movements of heavenly bodies and how these patterns affect living systems on earth.
3. The study of the relationship of all living things to the universe.
Supposedly, the star is Sirius, the dog star; because it rises and sets with the sun during summer in the northern hemisphere, its name is associated with "dog days" usually applicable to the hottest part of the year in places north of the equator.
The dog days are those from about the middle of July to the middle of August although the exact dates vary depending on where people live.
The thought behind astrobolism was connected to an old idea that this period of summer was under a bad influence, in which dogs ran mad, the air was unwholesome, sunstroke was common, and practical work was not done because of a lack of desire by people to do anything.
2. The branch of science that explores the chemical interactions between dust and gas interspersed between the stars.