Astrophysics definition, the branch of astronomy that deals with the physical properties of celestial bodies and with the interaction between matter and radiation in the interior of celestial bodies and in interstellar space. The subject areas of this dictionary at the time of this writing are among the most active of the physical sciences. Constellation definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Difference between astrology and astronomy in the simplest form is this; astronomy is a science while astrology is considered a pseudo-science by modern scientists. See more. Observational astronomy, which was the main form of astronomy elsewhere, was taken a step further in Greece: they attempted to build a model of the universe that could account for the observations.They explored all imaginable alternatives, they considered many different solutions for the various astronomical … Astronomy is an area where the Greeks displayed a remarkable talent. Astrology is widely considered today to be diametrically opposed to the findings and theories of modern Western science. cosmology and Star Trek. in modern astronomy, any one of the sections into which the celestial sphere is divided in order to facilitate orientation in the stellar sky. "Ancient astronomers could use it like a giant gunsight to determine when the sun was rising in a certain direction. Stonehenge is a famous example. Astrology, type of divination that involves the forecasting of earthly and human events through the observation and interpretation of the fixed stars, the Sun, the Moon, and the planets. Biology, study of living things and their vital processes that deals with all the physicochemical aspects of life. They sighted through the monument to a large stone placed at a distance, the heelstone, to identify the day of the summer solstice. Look it up now! 2. In modern astronomy, the leading cosmology is still the Big Bang theory, which claims that the universe began with a huge explosion that sent matter and energy spreading out in all directions. Albert Einstein and Max Plank were the pioneers of modern of physics as the first scientists to introduce the theory of … However, we can all accept that astronomy and astrology are similar looking words that are also somewhat related. astronomy definition: 1. the scientific study of the universe and of objects that exist naturally in space, such as the…. Astrophysics and astronomy are enjoying a new golden era, with remarkable observations in new wave bands (γ-rays, X-rays, infrared, radio) and in new fields: neutrino and (soon) gravitational wave astronomy. Modern physics is a branch of physics that is mainly concerned with the theory of relativity and quantum mechanics. Astrophysics definition is - a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena. Learn more. Cosmology definition is - a branch of metaphysics that deals with the nature of the universe. 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