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Printed star map of Su Song (1020–1101) showing the south polar projection. The astronomy of East Asia began in China. Solar term was completed in Warring States period. The knowledge of Chinese astronomy was introduced into East Asia. Astronomy in China has a long history.
c. 16th century BCE – Mesopotamian cosmology has a flat, circular Earth enclosed in a cosmic ocean. [1]c. 15th–11th century BCE – The Rigveda of Hinduism has some cosmological hymns, particularly in the late book 10, notably the Nasadiya Sukta which describes the origin of the universe, originating from the monistic Hiranyagarbha or "Golden Egg".
1887 – Paris conference institutes Carte du Ciel project to map entire sky to 14th magnitude photographically; 1888 – First light of 91cm refracting telescope at Lick Observatory, on Mount Hamilton near San Jose, California; 1889 – Astronomical Society of the Pacific founded; 1890 – Albert A. Michelson proposes the stellar interferometer
The Cosmic Background Explorer satellite produces a detailed map of the background radiation remaining from the Big Bang. The map shows "ripples", caused by slight variations in the density of the early universe – the seeds of galaxies and galaxy clusters. The 10-meter Keck telescope on Mauna Kea, Hawaii, is completed. The first revolutionary ...
2020 – After a 20-year-long survey, astrophysicists of the Sloan Digital Sky Survey publish the largest, most detailed 3D map of the universe so far, fill a gap of 11 billion years in its expansion history, and provide data which supports the theory of a flat geometry of the universe and confirms that different regions seem to be expanding at ...
The new year brings a fresh slate of exciting astronomical events in the night sky, and one that will take place in the middle of the day that, for many, will be a once-in-a-lifetime spectacle.
Here are the top three astronomy events of the past year: One of the surprises in the night sky in 2024 was Comet A3 (Tsuchinshan-ATLAS), which m. Stargazers had high hopes for 2024, in part due ...
By historical astronomy we include the history of astronomy; what has come to be known as archaeoastronomy; and the application of historical records to modern astrophysical problems." Historical and ancient observations are used to track theoretically long term trends, such as eclipse patterns and the velocity of nebular clouds.