Observational Musings

The Day After the Summer Solstice over 3 Centuries Ago Put Us Back 1,500 Years in Astronomy

Being too close to the sun somehow made us discredit its central authority

Bartolomeu Velho, Public domain, via Wikimedia Commons

Yesterday, 21 June 2021 at 3:32 UTC, was Summer Solstice in the Northern Hemisphere. It was the astronomical phenomenon…