Tonight
reading the sky…Reading the sky…
Darkness—
Moon—
Planets—
Station—
Aurora—
Is it worth stepping outside tonight? Here's the sky's answer for San Jose, CA
Reading the sky…
Five live rooms. Each tile is the real view, right now — click in for the full instrument and the why-it-looks-that-way.

Live in nine wavelengths, the flare log, and the corona out to LASCO's edge.

This hour's moon, a 30-day libration loop, phase calendar, and eclipses from your spot.

GOES full-disk loops, a day of EPIC, and a living map of fires, storms, and quakes.

A live ground-track map, a fleet of six satellites, and a visible-pass planner.

The aurora oval, Kp history and forecast, solar wind trends, and the alert wire.