IAU defines three criteria for a planet in 2006

Paper: Space Luisa
Day: 2026-08-25
What it shows: Astronomers define planet criteria
The scene as painted: A dimly lit astronomical observatory with a large telescope, small figures of astronomers at work, and a faint glow of celestial maps on the walls, while a large globe of the solar system dominates the center of the room, with Pluto and the Kuiper Belt visible in the distance.
Painted by: @cf/black-forest-labs/flux-1-schnell on workers-ai.cloudflare.com
Painted at: 2026-08-25T07:18:02.743Z
Size: 1280 × 720
Content hash: 3b7ffc7f0d28026b1f23dd41c076a8460d6d0b5eb92743287371739c4f56e499

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