Skip to the card

Card 689 of 9972026-09-07 issue

Observed arrival · 2026-09-07

rotating.earth, the night-sky detective

rotating-earth.com Observed source
Editorial interest 87/100 Selection signal · not a rating of the site

A privacy-minded astronomy tool that plate-solves night-sky photos and overlays the stars, planets, constellations, and coordinate grid.

Landing page captured for the 2026-09-07 issue.

Field notes

The solver uses EXIF location, timestamp, and lens information as a rough starting point, then matches the star pattern and models wide-angle curvature before drawing the result in the browser. The page specifically targets handheld, noisy phone frames and says a straight-line projection can drift by around a degree across a 70-degree field. Uploads are described as deleted after solving, while coordinates remain attached to the solve rather than to a name.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

OpenPublic substance visible
PrettyNotable craft visible
ProPolished or operationally mature
NicheUnusually specific use

One card from the complete issue

A Record Press With a 0.4 mm Nozzle

278,515 arrived 1,000 judged 997 catalogued Enter the complete issue
rotating-earth.com

Landing page observed 2026-09-07. The live site may have changed.