Donati’s Comet 1858: The Comet That Stunned the World

Explore Donati’s Comet of 1858—its historic observations, first photographs, and global impact, from Florence skies to Abraham Lincoln’s gaze.

Silent Fireballs, Thunderous Awe: The 1913 Meteor Procession

Eyewitness accounts of the rare 1913 Great Meteor Procession, a slow-moving fireball display across Canada, Bermuda, and the South Atlantic.

STT 461 in Cepheus: A Multiple Star System—or a Cosmic Illusion?

The double star Struve 2840 is located in the northern sky within the constellation Cepheus. Backyard astronomers should find it pretty easy to separate Struve 2840’s two stars, which are separated by 18 arcseconds. The pair is also known as STF 2840, SAO 33819, HD 208063, HR 8357.