Sky Guide
The Sky Guide helps you observe the real sky. It collects the recurring events and the physics behind them — from tonight's planets to the next eclipse — and links to the computed and reference readouts under /sky. Timing and visibility data are drawn from authoritative almanac sources or computed from published algorithms, never simulated.
Night Sky Tonight
A guide to what's visible after dark right now.
Moon Phase
The Moon's cycle from new to full and back.
Meteor Showers
When Earth passes through cometary debris streams.
Solar Eclipses
When the Moon passes between Earth and the Sun.
Lunar Eclipses
When the Moon passes through Earth's shadow.
Planet Visibility
Which planets are visible, and where to look.
ISS Tracker
Spotting the International Space Station overhead.
Comet Visibility
Tracking comets bright enough to observe.
Sky Calendar
A running calendar of notable sky events.
Celestial Events
Explainers for the events that make people look up.
Space Weather
Solar storms, the solar wind, and their effects near Earth.
Sun Activity
The Sun's changing activity — sunspots, flares, and the solar cycle.
Explore other hubs
Astronomy
The universe, studied with evidence.
Astrology
A symbolic tradition, presented as culture.
Calculators
Methods for the sky — astronomical and traditional.
Encyclopedia
Definitions, history, and the human context of the sky.
Observatory
See the universe — through verified, openly licensed imagery.
Guides
Learn the sky, step by step.