All guides
79 guides to the planets, moons, Earth's past, deep space and the spacecraft exploring it — each with an interactive 3D view.
Solar System →
The Sun and all eight planets: physical facts, atmospheres, moons, orbits and the missions that explored them.
Moons →
The major moons of the Solar System, from our own Moon to Europa, Titan and Triton, grouped by planet.
Earth history →
Twelve geological periods from the Cambrian explosion to the Ice Age, each on a 3D globe of the ancient Earth.
Paleozoic Era
- CambrianThe explosion of animal life · 538.8 – 485.4 million years ago
- OrdovicianTeeming seas, then a great freeze · 485.4 – 443.8 million years ago
- SilurianLife takes root on land · 443.8 – 419.2 million years ago
- DevonianThe Age of Fishes · 419.2 – 358.9 million years ago
- CarboniferousThe age of coal forests · 358.9 – 298.9 million years ago
- PermianPangaea and the Great Dying · 298.9 – 251.9 million years ago
Mesozoic Era
- TriassicRecovery and the first dinosaurs · 251.9 – 201.4 million years ago
- JurassicThe age of giant sauropods · 201.4 – 145 million years ago
- CretaceousFlowers, T. rex and an asteroid · 145 – 66 million years ago
Cenozoic Era
- PaleogeneMammals inherit a warming world · 66 – 23.03 million years ago
- NeogeneGrasslands, apes and the first hominins · 23.03 – 2.58 million years ago
- QuaternaryIce ages, mammoths and us · 2.58 million years ago – today
Deep space →
Black holes, stars, exoplanets, galaxies and the invisible universe, from Sagittarius A* to dark matter.
Black holes
- Sagittarius A*Supermassive black hole · ≈ 26,000 ly
- M87*Supermassive black hole · ≈ 55 million ly
- Gaia BH3Dormant stellar black hole · ≈ 1,900 ly
Stars & remnants
- Orion NebulaStar-forming nebula · ≈ 1,340 ly
- BetelgeuseRed supergiant · ≈ 550–700 ly
- Sirius BWhite dwarf · 8.6 ly
- Crab NebulaSupernova remnant · ≈ 6,500 ly
- Crab PulsarNeutron star · pulsar · ≈ 6,500 ly
Other worlds
- Proxima Centauri bExoplanet · 4.24 ly
- TRAPPIST-1Seven-planet system · ≈ 40 ly
- PlutoDwarf planet · ≈ 39 AU
- Kuiper BeltBelt of icy worlds · 30–50 AU
Galaxies
- The Milky WayBarred spiral galaxy · We are inside it
- Andromeda GalaxySpiral galaxy (M31) · ≈ 2.5 million ly
Invisible universe
- Dark matterInvisible mass · Everywhere
- Dark energyAccelerating expansion · Everywhere
- Gravitational wavesRipples in spacetime · GW150914: ≈ 1.3 billion ly
- Cosmic microwave backgroundAfterglow of the Big Bang · ≈ 46 billion ly (today)
Terrains →
Jungles, deserts, glaciers, the Moon's surface and gas giant clouds: how each landscape works, with a 3D scene to land in.
- JungleThe layered, dripping green heart of the tropics
- DesertSand seas, bare rock and the art of surviving without water
- GlacierRivers of ancient ice that flow, crack and remember
- The Moon's surfaceGrey dust, ancient craters and a black sky with Earth hanging in it
- Gas giant cloudsA world with no ground, only deeper and deeper cloud
Spacecraft →
Robotic explorers across the Solar System: where each one is now, the route it flew and what it found.
- BepiColomboTwo orbiters bound for Mercury
- Europa ClipperSearching for a habitable ocean
- HeraA crash-scene investigator for planetary defence
- JUICEEurope's explorer of Jupiter's icy moons
- JunoPeering beneath Jupiter's clouds
- James Webb Space TelescopeThe largest space telescope ever launched
- LucyA tour of Jupiter's Trojan asteroids
- New HorizonsThe first mission to Pluto
- OSIRIS-APEXFrom Bennu's sample to Apophis
- Parker Solar ProbeThe spacecraft that touched the Sun
- Pioneer 10The first visitor to Jupiter
- PsycheJourney to a metal world
- Solar OrbiterThe first views of the Sun's poles
- Voyager 1The most distant human-made object
- Voyager 2The only visitor to Uranus and Neptune