Building delightful, open-source experiences for space and beyond.

We explore, we learn, we craft.

Calestians is a community-driven organization focused on creating polished, practical apps and tools around science, space, and exploration. We value clean code, great UX, and pragmatic engineering.

• Astry — A beautiful Flutter app for exploring NASA data (APOD, Mars Rover), with bookmarking, fullscreen viewing, and smart caching.

• Mobile apps (Flutter / Dart)
• Data-powered experiences (open APIs)
• Reusable UI and tooling for fast iteration

• Flutter • Dart • HTTP • Caching • CI/CD (GitHub Actions)

• Good first issues are labeled in each repo
• Open an issue to propose ideas or improvements
• Follow conventional commits where possible

• Issues: use repo issue trackers
• Discussions: coming soon
• Code of Conduct: be kind, constructive, and curious

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"Somewhere, something incredible is waiting to be known." — Carl Sagan