Night Sky
- Tonight over Brecon
- Saturn, up close
- Horizon view
See which stars, planets, constellations, galaxies and satellites you can spot from any location right now. It accounts for the weather, local light pollution and what is above the horizon.
Launching soon- The spark
- I wanted to know what I would see if I stepped outside tonight, without having to read a star chart.
- What I built
- A live star map with dome and horizon views, a visibility model that weighs light pollution, moonlight, twilight and cloud, and an outlook that picks the best time to look tonight.
- What I learned
- Working out whether a star is visible takes a lot of modelling. Sky brightness, the Moon, the atmosphere and the cloud forecast all change the answer.