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New in 1.7: • New simulations: Type Ia supernova, gravitational lensing and the brightest gamma-ray burst ever seen • What if: falling into a black hole, a rogue black hole crossing the Solar System, flying at 99% of light speed • Daily challenge: today's object and a size challenge with a streak • Ask about space (on phones with built-in AI) • Smoother on mid-range phones, and a crash fix for some GPUs
Universe size comparison in 3D: planets, stars, black holes & space simulations
Universe size comparison in 3D: see how big planets, stars, black holes and galaxies really are, side by side at true scale. Fly from a small asteroid to the edge of the observable universe and feel how big space is. How big is the Sun next to Earth? How small is the Sun next to the largest stars? What does a black hole do to a star that comes too close? And where are we, inside the Milky Way and beyond? Cosmic Scale lines up 77 objects from smallest to largest, from a 490-metre asteroid to the Solar System and the Oort Cloud, and 123 with the Beyond pack, which adds galaxies, nebulae and the largest structures in the cosmos. Every one is drawn at its true size, so it is a planet, star and black hole size comparison in one: a 3D solar system and beyond. COMPARE ANY TWO "The Sun is 109× wider than Earth. About 1.3 million Earths would fit inside it. Light crosses it in 4.6 seconds." Pick any two objects and see them side by side at real scale. 12 SPACE SIMULATIONS Cosmic Scale is also a space simulator. Watch how things in space happen, step by step, with real numbers: a pulsar, Earth's magnetic shield, the Sun's death, a black hole tearing a star apart, a supernova, how black holes are made, two black holes merging, two neutron stars colliding, a magnetar's giant flare, a quasar, the Milky Way meeting Andromeda, and the Big Bang. Each is simulated from real physics and measurements; anything no eye could see, like magnetic fields and radio waves, is drawn and labelled as drawn. AS YOU'D SEE IT Ten simulations also play as a short film of only the light your eyes would catch, in true colours, with nothing drawn over it. SKY: WHAT IS ABOVE YOU TONIGHT See tonight's Moon and bright planets, plus the eclipses, meteor showers and planet meetings coming up this year, worked out on your phone from real orbits. Get a note the evening before something worth looking up for (you can switch it off in Settings), and add your location to see which eclipses you can see. THE TOUR Press play and fly from an asteroid past moons, planets, stars and black holes out to the observable universe, with calm music and a bell for every step up in size. At each layer we live inside, the tour dives in to show where we are: Earth in the Solar System, the Solar System in the Milky Way, all the way out. INSPECT ANYTHING IN 3D Turn any object with your finger: tilt Saturn's rings, spin a galaxy edge-on, look down onto a black hole's glowing disk, and share a picture. REAL MAPS, PHOTOS AND SOUNDS Planets and moons wear real maps from NASA missions. Open any object for real photographs, from the Blue Marble to Webb's deep fields, each credited. Listen to the wind on Mars, lightning on Jupiter, Saturn's radio auroras and NASA's sonifications of black holes. 15 LANGUAGES English, Español, Português, Français, Deutsch, Türkçe, Bahasa Indonesia, Tiếng Việt, Русский, Oʻzbekcha, العربية, हिन्दी, 简体中文, 日本語 and 한국어. FREE, WITH OPTIONAL VIDEOS The pulsar simulation is free. Each other simulation opens for good with one short video. The Beyond pack and Ultra graphics open for 24 hours with a video. Ads appear only at natural breaks, never inside a simulation. COSMIC SCALE PRO No ads, ever, and everything open at once: all 123 objects, every simulation and film, and Ultra graphics. $20 a year, $3 a month, or $30 once for life. Subscriptions renew until you cancel them in Google Play. No sign-up needed: Pro stays with your Google account. For astronomy fans, students, teachers and anyone curious about how big the universe is. Sizes come from NASA/JPL fact sheets and published measurements. Supergiant stars and the largest galaxies are uncertain by tens of percent; for black holes the size shown is the event horizon.