Live demos and experiments, mostly from the A-Starry-Sky project.

• Today — Live Sky
  Real-time sky for today's date and default location.
• Christmas Star, 1226
  Great Conjunction of Jupiter & Saturn on the winter solstice evening of 1226.
• Mars Atmosphere
  Simulated Martian atmosphere — red-shifted Rayleigh, thin air, 3,389 km radius, 10.8 km sky.
• Wild Sky
  Non-physical Mie and Rayleigh scattering values for a dramatic, otherworldly sky.
• Aurora Borealis
  Northern Lights over Tromsø, Norway during the St. Patrick's Day geomagnetic storm, March 17, 2015.
• Light Clouds
  Scattered clouds at 25% coverage.
• Medium Clouds
  Partly cloudy sky at 55% coverage.
• Heavy Clouds
  Overcast sky at 85% cloud coverage.
• Solar Eclipse 2024
  Total solar eclipse as seen from Del Rio, Texas — April 8, 2024, 1:27 PM CDT.
• High Altitude
  View from 10 km above sea level — the atmosphere as seen from a cruising aircraft.
• Desert, 1226
  The original low-poly desert scene — December 26, 1226, at 200× time speed.