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A knowledge platform for everything above Earth — astronomy, space, the night sky, celestial events, mythology, and astrology as a clearly separate cultural tradition.

Astronomy is presented as scientific, evidence-based, and sourced. Astrology is presented as cultural, symbolic, and interpretive — never as proven science.

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Home
History of Astronomy
History of Observatories

Discover

History of Observatories

The great observatories, from Maragha and Samarkand to Greenwich and Paranal.

7 entries.

Astronomer
Nasir al-Din al-Tusi
1201 CE – 1274 CE
Astronomer
Ulugh Beg
1394 CE – 1449 CE
Catalogue
Zij-i-Sultani
1437 CE
Astronomer
Tycho Brahe
1546 CE – 1601 CE
Astronomer
Giovanni Cassini
1625 CE – 1712 CE
Event
Founding of the Royal Observatory, Greenwich
1675 CE
Astronomer
Edwin Hubble
1889 CE – 1953 CE