2020-12-21.mp4 -

: Tiny specks of light (Io, Europa, Ganymede, and Callisto) are visible orbiting Jupiter.

⭐ : This file is a digital time capsule of a "once-in-a-lifetime" astronomical rarity that won't happen this closely again until 2080. 2020-12-21.mp4

: This was the closest observable alignment since the year 1226. : Tiny specks of light (Io, Europa, Ganymede,

: While visible to the eye, most high-quality "mp4" captures from this night used DSLRs with 600mm+ lenses or tracking mounts. : Tiny specks of light (Io

: Subtle flickering caused by the Earth’s atmosphere as the planets sit low on the horizon. 🔭 Viewing Conditions