Observational Astronomy
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Observational Astronomy is a type of astronomy. One has to record, analyse, and study data taken from giant telescopes located in observatories in isolated places. People will use giant telescopes to take a look on an object in the night sky and then study that object. Many times, one will have to study a photo of an object they themselves did not take.
Reference
[change | change source]https://en.wikipedia.org/wiki/Observational_astronomy