Science/ Space

Space Science is an all-encompasing term that describes most all of the various sciences that are concerned with the study of the Universe, generally also meaning "excluding the Earth" and "outside of the Earths atmosphere". more...

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Originally all of these sciences were considered part of Astronomy. However over the recent years the major sub sciences, such as Astrophysics, within astronomy have grown so large that they are now considered overall sciences on their own. There are 8 overall categories that can generally be described on thier own; Astrophysics, Galactic Science, Stellar Science, non-Earth Planetary Science, Biology of Other Planets, Astronautics/Space Travel, Space Colonization and Space Defense. The Library of Congress and Dewey Decimal System have a major classification "Descriptive Astromomy" which they use instead of placing descriptive works into their huge "Geography" collections.

Astronomy

Astronomical Methods

Astronomical methods are the equipment and techniques used to collect data about the objects in Space. Galileos first astronomical method was to find and buy the best telescope of the time and then point that telescope to the heavens. Methods can be categorized according to the wavelength they are attempting to record.

Radio astronomy includes radio telescopes; devices that receive and record radio waves from outside the Earth. They record cosmic microwave background radiation, Big Bang and Pulsars as well as others. Optical astronomy is the oldest kind of astronomy. X-ray includes Chandra X-ray Observatory and others. gamma ray includes Compton Gamma Ray Observatory and others. Neutrino astronomy observatories have also been built, primarily to study our Sun. gravitational wave observatories have been theorized.

space telescope is a telescope orbiting or travelling from the Earth. RXTE is Long Exposure Time Astronomy used to study millisecond pulsars and pulsar deceleration.

Spectroscopy

Astronomy teaching tools include Planetariums and others.

Further information can be found at Library of Congress Classification QB1-139 General Astronomy (Dewey 520), QB140-237 Practical and spherical astronomy (Dewey 522), (Observatories Dewey 522), QB468-480 Non-optical methods of astronomy

Descriptive Astronomy

Galileos second astronomical method was to describe what he saw in the telescope. Descriptive Astronomy is the highest sub category of Astronomy used by the Library of Congress and Dewey Decimal systems to classify any knowledge related to describing celestial objects. Because we are seeing today portions of the Universe as they actually looked millions or billions of years ago we should have a historical section within Descriptive astronomy: History of The Universe includes size shape and structure of the historical universe), Cartography of The Historical Universe, Early Universe and others. The Current Universe includes size shape and structure of the current Universe, cartography of the current Universe and others.

Read more at Wikipedia.org