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Celestium Dispatch
Weekly dispatch from Simon Whistler — engineering deep-dives, cost breakdowns, workshop build notes, and tools that actually pay off.
One issue per week. No filler.
Latest
Browse Projects6 published articles across 4 project desks.
Spaceflight
The Engines That Could Reach Another Star
Proxima Centauri b is 4.24 light-years away. At Voyager 1's current speed, we would arrive in 73,000 years. The physics of getting there faster exists — just barely. Here are the engines that might actually make the journey possible.
Simon Whistler · March 18, 2026
Spaceflight
The Pale Blue Dot, 35 Years On
On February 14, 1990, Voyager 1 turned its camera back toward Earth from 6 billion kilometres away. The photograph it took remains the most humbling image in human history. Thirty-five years later, what have we done with the lesson?
Simon Whistler · February 14, 2026