The public observatory

The world
leaves a
signal.

Flight paths. Radio waves. Orbital tracks.
A closer look at a world that never stands still.

Public sources. Open questions.
Follow what catches your attention.

EXPLORE THE DESKS

Different signals.
Same curiosity.

Flight paths, field reports, and signals beyond the horizon.
Pick a starting point.

Follow aircraft across the map—and see how receivers turn radio signals into tracks.

Put occurrences on the map. Read the reports, check the dates, and follow the original sources.

See where signals travel. Explore reception maps, listening posts, and the shape of a wavelength.

A restless Sun. A changing ionosphere. Follow NOAA conditions, Kp history, and the aurora outlook.

Follow the ISS and amateur-radio spacecraft. Explore predicted passes and signals above the horizon.

Eight places that reward a second look. Explore satellite imagery, map locations, and source dossiers.