ORRERY

HOW TO FLY THE ORRERY

A true-scale Solar System and galactic neighbourhood. Everything sits at its real position and distance.

Drag / one finger: Orbit the camera around what you are following.
Wheel / pinch: Zoom in and out.
Click / tap: Select a body — its details appear in the TARGET panel.
Double-click / double-tap: Warp to that body.
⟶ Warp: Fly smoothly to the destination chosen in the NAV COMPUTER list (search box: type a name, Enter warps).
⚡ Teleport: Jump there instantly.
◎ Follow: Keep the camera locked on the chosen body as it moves.
Reset: Reload everything back to the start.

❚❚ Hold / ▶ Resume: Pause or restart time.
◀ REV: Run time backwards (only in KEPLER mode).
Slider & presets: How fast time runs: from real time up to 30,000 years per second.
Set date / Now: Jump to any date, or to the present moment.
Chips: Current speed (CAPPED = the computer can’t keep up), energy drift in N-body mode, number of bodies.
▲ more: On phones: show the full time and destination controls.

Mass multiplier: Make the body ×0.01 to ×1000 heavier — switches to full N-body gravity.
Follow / Warp: Lock onto or fly to the selected body.
Freeze → Kepler: Stop the N-body simulation and fit clean orbits to the current state.

Scenarios → Run: Presets: a rogue star flies through, Earth ×100, Sun ×2, Jupiter ×50.
Scenario editor: Spawn your own star or planet, kick a body’s speed (Kick ×v), remove it, save / load / export your scenario.

KEPLER · ANALYTIC: Exact orbit formulas — fast, can run backwards.
N-BODY · LEAPFROG: Every body pulls on every other — needed after you change masses.
SURVEY / WARP / PERTURBED / IMPACT: What the ship is doing right now.
EARTH / SUN rings: Point to Earth and the Sun when they are off-screen (amber = behind you).

Space: Hold / resume time
[ and ]: Slower / faster time
R: Reverse time
1 – 9, 0: Warp to Mercury … Pluto, 0 = Sun
T / F: Teleport to / follow the selected body
Tab: Free flight: W A S D move, R F up/down, Q E roll, drag to look, − / = change speed gear
O / L: Show or hide orbits / labels
Esc: Clear the selection