Observational astronomy is a division of the astronomical science that is concerned with recording and interpreting data, in contrast with theoretical astrophysics, which is mainly concerned with finding out the measurable implications of physical models.It is the practice of observing celestial objects by using telescopes and other astronomical apparatus.

X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects. X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites.X-ray astronomy uses a type of space telescope that can see x-ray …

Astronomy has long history in Indian subcontinent stretching from pre-historic to modern times. Some of the earliest roots of Indian astronomy can be dated to the period of Indus Valley civilisation or earlier. Astronomy later developed as a discipline of Vedanga, or one of the "auxiliary disciplines" associated with the study of the Vedas, dating 1500 BCE or older.

The heliosphere is the magnetosphere, astrosphere and outermost atmospheric layer of the Sun.It takes the shape of a vast, bubble-like region of space.In plasma physics terms, it is the cavity formed by the Sun in the surrounding interstellar medium.The "bubble" of the heliosphere is continuously "inflated" by plasma originating from the Sun, known as the solar wind.

Astronomy is a natural science that studies celestial objects and phenomena. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Astronomy is the study of everything in the universe beyond Earth's atmosphere. That includes objects we can see with our naked eyes. Astronomy is one of the oldest sciences.

Cecilia Payne-Gaposchkin (born Cecilia Helena Payne; () May 10, 1900 – () December 7, 1979) was a British-born American astronomer and astrophysicist who proposed in her 1925 doctoral thesis that stars were composed primarily of hydrogen and helium. Her groundbreaking conclusion was initially rejected because it contradicted the scientific wisdom of the time, which …

One of the Oldest Observatories in South America is the Quito Astronomical Observatory, founded in 1873 and located 12 minutes south of the Equator in Quito, Ecuador. The Quito Astronomical Observatory is the National Observatory of Ecuador and is located in the Historic Center of Quito and is managed by the National Polytechnic School. (from Observational …

Brown dwarfs (also called failed stars) are substellar objects that are not massive enough to sustain nuclear fusion of ordinary hydrogen (1 H) into helium in their cores, unlike a main-sequence star.Instead, they have a mass between the most massive gas giant planets and the least massive stars, approximately 13 to 80 times that of Jupiter (M J). However, they can fuse …

Twinkling, also called scintillation, is a generic term for variations in apparent brightness, colour, or position of a distant luminous object viewed through a medium. If the object lies outside the Earth's atmosphere, as in the case of stars and planets, the phenomenon is termed astronomical scintillation; for objects within the atmosphere, the phenomenon is termed terrestrial scintillation.

Archaic Greek astronomy. Both Hesiod and Homer were directly and deeply influenced by the mythologies of Phoenicia and Mesopotamia, thanks to Phoenician sailors and literate Babylonians and Arameans, who went to Lefkandi in Greece during the Orientalizing Period, between c. 750 BC and c. 630 BC for maritime commerce and to live and work.The Babylonians and …