FILE 001Space🪐72,000 feetOlympus Mons on Mars rises about 72,000 feet (21.9 km) — roughly 2.5× Mount Everest — the solar system's tallest volcano.SrcNASA/ASU THEMIS — Mars OdysseyPass the claimOpen file
FILE 002Space🪐Sharelakes of liquid methaneSaturn's moon Titan has stable lakes of liquid methane — the only world besides Earth known to have standing surface liquids.SrcNASA Science — Cassini Titan Lakes
FILE 003Space🌑Share1.5 inches (3.8 cm) per yearLunar laser ranging shows the Moon drifting away by about 1.5 inches (3.8 cm) per year.SrcNASA — Apollo Lunar Laser Ranging
FILE 004Space💎Sharediamond “rain”Lab experiments show hydrocarbons can form diamond “rain” under extreme pressure — supporting models for Neptune and Uranus interiors.SrcSLAC / Nature Astronomy (Kraus et al., 2017)
FILE 005Space🌌Share330 million light-years acrossThe Boötes Void is a vast underdense region of space roughly 330 million light-years across.SrcAstrophysical Journal (Kirshner et al., 1987)
FILE 006Space☄️Share76 yearsHalley's Comet returns on average every 76 years; last seen in 1986, next perihelion is in 2061.SrcNASA Science — 1P/Halley
FILE 007Space💫Share1 trillion kilogramsA sugar-cube of neutron-star material would weigh about 1 trillion kilograms on Earth — extreme density after stellar collapse.SrcNASA Science — Neutron Stars
FILE 008Space💫Share1 quadrillion times strongerA magnetar can have a magnetic field 1 quadrillion times stronger than Earth's — strong enough to erase a credit card from half the distance to the Moon.SrcNASA Imagine the Universe
FILE 009Space💫Share716 times per secondPulsars rotate so fast they can spin 716 times per second — their beams sweep across space like cosmic lighthouses.SrcNRAO / Science (Hessels et al.)
FILE 010Space☀️Share600 million tons of hydrogen into helium every secondThe Sun converts about 600 million tons of hydrogen into helium every second through nuclear fusion.SrcNASA
FILE 011Space🚀Shareany extraterrestrial lifeThe Voyager Golden Record carries sounds and images from Earth intended for any extraterrestrial life that might find it — including greetings in 55 languages.SrcNASA JPL
FILE 012Space🛸ShareVoyager 1The Voyager 1 spacecraft, launched in 1977, is the <hl>farthest human-made object from Earth</hl> — currently over 15 billion miles away in interstellar space. It carries a Golden Record with sounds, music, and images of Earth for any alien civilization that might find it.SrcNASA JPL
FILE 013Space🌍Sharemagnetic fieldEarth's magnetic field extends roughly <hl>40,000 miles into space</hl>, forming a protective bubble called the magnetosphere that shields us from the Sun's deadly solar wind. Without it, our atmosphere would be stripped away — like what happened to Mars.SrcESA
FILE 014Space🛸Sharetrillions of icy objectsThe Kuiper Belt beyond Neptune contains trillions of icy objects, including dwarf planets like Pluto and Eris.SrcNASA
FILE 015Space☀️ShareSunThe Sun is so massive that it accounts for <hl>99.86% of all the mass</hl> in our entire solar system. Everything else — all planets, moons, asteroids, and comets combined — makes up the remaining 0.14%.SrcNASA
FILE 016Space🔴Share243 Earth daysA day on Venus lasts 243 Earth days — longer than Venus’s 225-Earth-day year.SrcNASA Science — Venus Facts
FILE 017Space🌙Sharesame amount of sunlightThe far side of the Moon isn't actually dark — it gets the same amount of sunlight as the near side. We just can't see it from Earth.SrcNASA
FILE 018Space🌌Share93 billion light-years acrossThe observable universe is 93 billion light-years across, but it's been expanding since the Big Bang 13.8 billion years ago.SrcNASA
FILE 019Space🌌Share27% of the universeDark matter makes up about 27% of the universe, but scientists still don't know what it actually is.SrcCERN
FILE 020Space🔊ShareSpace is completely silentSpace is completely silent — sound waves require a medium (like air) to travel through, and space is a vacuum. Astronauts on spacewalks can only communicate through <hl>radio waves</hl>. Even the most massive explosions in space produce no sound.SrcNASA
FILE 021Space🌑Sharedark side of the MoonThe dark side of the Moon isn't actually dark — it receives just as much sunlight as the near side. It's called "dark" because it's <hl>hidden from Earth's view</hl>, since the Moon's rotation is tidally locked to match its orbit.SrcNASA
FILE 022Space🌠Sharelight-yearA light-year is the distance light travels in one year — roughly <hl>5.88 trillion miles</hl>. The nearest star system, Alpha Centauri, is 4.37 light-years away. At the speed of the fastest spacecraft ever built, it would take over 6,000 years to get there.SrcEuropean Space Agency
FILE 023Space💨ShareGreat Red SpotThe Great Red Spot on Jupiter is a storm that has been raging for at least <hl>350 years</hl> and is large enough to swallow Earth entirely. Wind speeds at its edges exceed 400 mph, making it the largest storm in the solar system.SrcNASA JPL
FILE 024Space🌍Share60 miles thickEarth's atmosphere is only about 60 miles thick — if Earth were the size of a basketball, the atmosphere would be thinner than plastic wrap.SrcNASA
FILE 025Space🌟Sharedied millions of years agoWhen you look at the night sky, some of the stars you see may have already died millions of years ago — their light is still traveling to us.SrcESA
FILE 026Space🪐ShareSaturn's ringsSaturn's rings are mostly made of water ice particles ranging from tiny grains to chunks the size of houses. Despite spanning 175,000 miles across, the rings are astoundingly thin — <hl>only about 30 feet thick</hl> in most places.SrcNASA JPL
FILE 027Space🪐Share350 yearsJupiter's Great Red Spot is a storm that has been raging for at least 350 years — it's bigger than Earth.SrcNASA JPL