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Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. [1] [2] As one of the founders of the discipline, James Keeler, said, astrophysics "seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space—what they are, rather than where they are", [3] which is studied ...
Space science is the study of everything in outer space. [26] This has sometimes been called astronomy , but recently astronomy has come to be regarded as a division of broader space science, which has grown to include other related fields, [ 27 ] such as studying issues related to space travel and space exploration (including space medicine ...
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics , physics , and chemistry in order to explain their origin and their overall evolution .
In the science of astronomy, ... A fundamental difference between Newton's cosmology and those preceding it was the ... from ancient Greek astronomy to -space ...
Space exploration, like its classical form astronomy, is one of the main sources for space science. While the observation of objects in space, known as astronomy , predates reliable recorded history , it was the development of large and relatively efficient rockets during the mid-twentieth century that allowed physical space exploration to ...
In more modern times, planetary science began in astronomy, from studies of the unresolved planets. In this sense, the original planetary astronomer would be Galileo , who discovered the four largest moons of Jupiter , the mountains on the Moon , and first observed the rings of Saturn , all objects of intense later study.
The following outline is provided as an overview and topical guide to space science: Space science – field that encompasses all of the scientific disciplines that involve space exploration and study natural phenomena and physical bodies occurring in outer space, such as space medicine and astrobiology. [1] [2]
Astrophysics – Subfield of astronomy; Astrosciences – Overview of and topical guide to space science; Hemolithin – Protein claimed to be of extraterrestrial origin; Interstellar medium – Matter and radiation in the space between the star systems in a galaxy