DISCOVER YOUR PLACE IN THE UNIVERSE
Explore space, test your cosmic knowledge, build planets, and discover fascinating facts about yourself and the universe. No downloads, zero accounts, 100% free interactive science.
🌌 Discover Yourself
Personal Cosmic DataHow Far Have You Traveled?
Calculate the staggering billions of kilometers you have journeyed through space since the exact day you were born.
Your Cosmic Address
Map your true astronomical location from your hometown out to the Laniakea Supercluster and the Observable Universe.
Your Age on Other Worlds
Find out how old you are in Mercury, Mars, Jupiter, and Saturn years based on true orbital periods around the Sun.
Your Weight on Other Worlds
Explore mass vs. gravitational weight. See what a scale would read on the Moon, Mars, Jupiter, and Pluto.
Your Space Birthday
Discover the Moon phase, Earth orbital position, and pivotal space exploration milestones that occurred when you arrived.
🪐 Create & Simulate
Interactive PhysicsBuild Your Own Planet
Tweak radius, gravity, temperature, water, and moons. Watch your procedural planet spin and get a habitability score.
What If Earth Had...?
Explore 9 fascinating planetary scenarios: two moons, double gravity, no moon, Saturn-like rings, or stopped rotation.
Asteroid Impact Simulator
Select asteroid size, speed, and density. Simulate the kinetic blast energy, crater dimensions, and shockwave radius.
Black Hole Simulator
Simulate event horizons, photon spheres, accretion disk Doppler beaming, and calculate tidal spaghettification forces.
Star Life Cycle Simulator
Adjust stellar birth mass from red dwarfs to hypergiants. Watch stars evolve from nebulas to white dwarfs, pulsars, or black holes.
🔭 Cosmic Scale & Explorers
Deep Space ScalesPlanet & Star Size Comparison
Put cosmic giants side-by-side to scale. See how many Earths fit inside Jupiter, the Sun, Betelgeuse, or black hole TON 618.
Solar System Scale & Light Speed
Scale the Sun to a basketball or 1-meter ball and see where the planets truly sit. Watch light crawl across space in real-time.
Light-Year Travel Calculator
Calculate travel time to the stars across cars, jetliners, rockets, and light speed with Einsteinian relativistic time dilation.
ISS Orbit & Flyover Simulator
Track the International Space Station at 27,600 km/h in real-time with live 2D ground track map and city flyover alerts.
🧠 Test Your Space Brain
Astronomy ChallengesSpace IQ
Answer randomized astronomy questions across planets, stars, and cosmology. Earn your official Space Rank and challenge a friend!
Would You Be an Astronaut?
Face 10 realistic spaceflight dilemmas. Measure your problem solving, teamwork, patience, risk tolerance, and optimal mission assignment.
Frequently Asked Questions
Learn more about how our astronomical calculations and simulations work.
Are these calculations scientifically accurate?
Yes! We use established astronomical constants, NASA planetary period records, standard kinetic energy and cratering scaling formulas, and synodic lunar algorithms. Where models are simplified for entertainment (such as the Planet Habitability Score or Astronaut Profile), they are explicitly labeled as such.
Is my personal information or birth date stored?
Zero personal data is stored on our servers. All calculations and procedural simulations run 100% client-side directly in your browser. Any shared links encode non-sensitive inputs into the URL parameters so results can be regenerated on demand without a database.
Can I play on mobile devices?
Every experience in the Space Zone is built mobile-first with touch-friendly sliders, responsive canvases, and native Web Share integration for instant sharing on WhatsApp, X, and messaging apps.