Explore in 3D Planets LearnTonight’s sky StarsAtlas Glossary

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Explore in 3DThe Sun and its worlds at their true size and distance PlanetsThe Sun and its eight planets, one page each LearnLessons, from a first look to the deep end

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Tonight’s skyWhat is above you right now, wherever you are StarsEvery star you can see, and how to meet one

Reference

AtlasCharts of everything, from the planets to the cosmic web GlossaryEvery word, plainly

Finding the star…

Most stars have no name, only a number in a catalogue. This page introduces any one of them.

The Sun, its worlds and everything beyond, in real photographs and real measurements.

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Home Explore in 3D Planets Learn Tonight’s sky Stars Atlas Glossary

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Heliocodex is run by FALLINGHIPPO LIMITED, company number 17415391, registered in England and Wales. Registered office: 71-75 Shelton Street, London, England, WC2H 9JQ. It is independent of NASA, ESA and every mission named here, and none of them endorses it. Physical data comes from NASA NSSDC planetary fact sheets, orbits from NASA/JPL Solar System Dynamics, and planet maps from Solar System Scope (CC BY 4.0). See Sources for everything we use and how.