Simon Willison’s Weblog

7th July 2009 - Link Blog

Stellarium. Really lovely open source planetarium application, for Linux, OS X and Windows.

Posted 7th July 2009 at 12:37 am

Recent articles

The Pelican comparison grid for Astra is pretty interesting - 4th September 2026
OpenAI's rogue agents were caught communicating via public wikis - 4th September 2026
Claude's new system prompt really doesn't want to reproduce song lyrics - 2nd September 2026

This is a link post by Simon Willison, posted on 7th July 2009.

open-source 318 planetarium 1 space 6 stellarium 1

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe