Hipparcos

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Science and technology

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What Wikipedia says

Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions and distances of celestial objects on the sky.

Excerpt from the Wikipedia article “Hipparcos”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Michael Perryman, CC BY-SA 3.0, via Wikimedia Commons.