RealTime Space

Strap in. RealTime Space puts you at the helm of your own starship in a full-scale, photoreal solar system - not a diagram, a place.

Thrust in one thumb, the stars in the other. Real navigation physics let you thrust, drift, flip, and brake your way between worlds, or punch the 100x warp and cross the solar system in minutes. Fly to Betelgeuse or Vega and watch a point of light resolve into a blazing sun.

THREE WAYS TO FLY
- VISOR: a clean, unobstructed view of space
- HELM: a full cockpit around you, instruments glowing
- CHASE: pull back and follow your own ship through the dark

A REAL SKY, NOT WALLPAPER
- 8,920 real stars from the HYG catalog, each at its true position with its real name, color, and brightness
- Real constellations, real star classes - approach any star and it becomes a sun
- The Milky Way band rendered from its actual position in the sky

THE WHOLE SOLAR SYSTEM
- Eight photoreal planets with high-resolution surfaces
- Volcanic Io, icy Europa, hazy Titan, geysers on Enceladus - the great moons are all here
- Saturn's rings cast real shadows; eclipses darken the right worlds at the right times
- Planets start at their real positions from live ephemeris data

MADE TO FEEL REAL
- Analytic eclipse and ring shadows, true star colors, gamma-correct lighting
- Procedural engine audio that responds to your thrust
- Time acceleration from 1x to 1000x - watch the moons dance
- Radar, scanner, missions, and a ship's codex full of real astronomy

SPACE EDUCATION THAT DOESN'T FEEL LIKE HOMEWORK
Every planet, moon, and star you visit is the real thing - real data, real scale, real science. Scan a world to learn about it. Great for kids, students, teachers, stargazers, and anyone who ever wanted to fly a spaceship.

NO NONSENSE
- No ads
- No account, no sign-in
- No data collection - your flight is yours
- Works completely offline

Your own starship. A full-scale universe. See you out there.

WORKS WITH TALKBACK
Every control is labeled — thrust, warp, the joystick, the camera views and the fly-to list — so the ship can be flown with a screen reader turned on.

Recent changes:
New: Make Your Tour. Pick planets, moons, stars, constellations and deep-sky wonders, then fly to each one and read real facts about it, in 10 languages. Constellations show from Earth, then from the side, where the shape falls apart. The asteroid belt is now easy to see and fly to, and the TOUR button sits right under the view button.