High Quality Content by WIKIPEDIA articles! An astronomical X-ray source may have one or more positional locations, plus associated error circles or boxes, from which incoming X-radiation (X-rays) has been detected. The location may be associated with a known astronomical object such as a source of electromagnetic radiation in another portion of the electromagnetic spectrum, for example, the visible or radio. An astronomical object previously detected say in the visible portion of the spectrum and later observed with an X-ray observatory in orbit around Earth is also an astronomical X-ray source. Striving to understand the generation of X-rays by the apparent source helps to understand the Sun, the universe as a whole, and how these affect us on Earth.

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