Simon Willison’s Weblog

Twitter / MarsPhoenix. NASA’s Mars Phoenix lander, due to land on the planet today, has a Twitter account. Bio: “I dig Mars!”.

Posted 25th May 2008 at 7:41 pm

Recent articles

LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025
Qwen3-4B-Thinking: "This is art - pelicans don't ride bikes!" - 10th August 2025
My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025

mars 1 marsphoenix 3 nasa 4 twitter 160

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