It was created by Arnold Barmettler, a researcher at the University of Zurich and formerly a scientific assistant at the European Space Agency.
[1] The website, available in English and German, featured a calendar (and/or email notifications) generated for your location including information on aurora, comets, tides, solar and lunar eclipses, planets, bright satellite passes (ISS, HST, etc.
[2][3][4] In October 2020, the original website ceased operations.
However, a replacement website is being run by Arnold Barmettler with the URL calsky.io.
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