Planetary Ephemeris Screensaver
The Planetary Ephemeris screensaver shows each planet's real position and distance from Earth today, computed by JPL's Horizons service and gathered key-less by the pipeline. It's free, runs in your browser, and ESC exits.
How the Planetary Ephemeris screensaver works
The saver reads the source described above and draws it on a canvas — no account, no tracking.
Each planet's real position and distance from Earth today, computed by JPL's Horizons service and gathered key-less by the pipeline. Horizons is the same system mission planners use; distances are in astronomical units on a logarithmic scale.
It refreshes on a schedule, so what you see stays current.
Colours and any options can be changed in settings; nothing is stored beyond your own browser.
A worked example
Each planet's real position and distance from Earth today, computed by JPL's Horizons service and gathered key-less by the pipeline. Horizons is the same system mission planners use; distances are in astronomical units on a logarithmic scale.
Settings & tips
- Accent and Background recolour the display.
- Every number on screen comes from the live source — nothing is simulated.
- Press ESC to leave fullscreen.
Frequently asked questions
- Is this real data?
- Yes — it comes from the source named on this page and is refreshed on a schedule.
- Is a key needed?
- No. This source is fully key-less.
- Is it free?
- Yes — free, no download, in your browser.