Episode 3 of 4

Shadow Casting at Night

When: 1861-06-30 to 1861-07-01
Where: Athens Observatory
Part of: Comet C/1861 J1, the Great Comet of 1861, is discovered

Due to forward scattering, the comet cast shadows at night, observed by Julius Schmidt at the Athens Observatory.

As a result of forward scattering, C/1861 J1 cast shadows at night. Julius Schmidt watched the comet cast shadows on the walls of the Athens Observatory during the night of June 30 to July 1, 1861.

Sources

C/1861 J1 (Tebbutt) Wikipedia, revision of 2026-07-19

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.