There are different definitions of A Some define it as a branch of science dedicated to the study of the motions and natures of celestial bodies， like planets， stars， and Others say it is the study of objects and matter outside the earth's atmosphere and of their physical and chemical Still others would say it is the study of everything， because it's a study of the universe and everything is part of the All three definitions are accurate， but however you define it， there are many fields within A Cosmologists study the Universe as a whole， including its Astrometrists measure great Planetologists study planets within our own Solar System as well as those orbiting distant Radio Astronomers use radio-telescopes to study the U There are also Mathematical Astronomers who use numbers， calculations and statistics to explain the Astronomy is not a "stand-alone" It combines areas from a number of other fields， including mathematics， chemistry， geology， biology and In fact， physics is such an integral part of the field that many astronomers are also known as A The ancient Greeks were the first to start developing astronomy theories about the design of the U There have been many astronomers throughout history who have played important roles in the Many have later been proved wrong as our knowledge and technology improved， but if not for the earlier work， later scientists would have had nothing on which to base their researchAstronomy is the study of the universe beyond the Earth's The science does not claim to predict your future or lend credence to the practises of A Rather through the use of Physics principles， Astronomy explains the evolution of the universe and through sound mathematical simulations forecasts its Although Astronomy has been around for thousands of years and is perhaps the oldest science， it is only in the last century and particularly the last few decades that we have developed the technology to study the universe in greater Every day we are gathering new data on everything from galaxy formation to black holes to the big bang itself using a staggering array of multi-wavelength telescopes on the ground and in We continue to answer one of humankind's most burning questions: "What is out there?" but perhaps more impressive is the great progress that has been made in answering the question "How does it all work?"
