Observed arrival · 2026-10-22
Horizon’s five astronomy labs
Horizon presents interactive astronomy simulations covering black holes, the solar system, deep space, starlight spectra, and the scale of stars.
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- People exploring astronomy through visual simulations
- Worth noticing
- The Orrery description traces planetary motion across a 10-billion-year timeline, extending outward to the Oort cloud.
Field notes
The five labs divide the subject by observable phenomenon, from gravitational lensing and planetary motion to spectral lines and stellar scale. Scene links include Sagittarius A*, Messier 87*, the Oort cloud, and a “Mystery spectra” entry; the homepage also offers English and Czech language options.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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