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Comment on Show HN: Galactic Compass – an app that points to the galactic centerparent

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I years ago did an exploratory prototype riffing on those town-center poles festooned with directional arrows. The base was a big fixed globe lat-lon frame, oriented to match the geographic location. Filled with arrows from the location (top of the globe) down towards assorted Earth highlights, with lengths obviously to scale. Then a (manually) despun unit with an ecliptic plate's scale planet arrows, and a set of non-scale arrows for other features (core, spinward, galactic orbital vector, great attractor, etc). A smaller second globe, similarly fixed, was solid to more easily see the Sun's shadow, which matches that on the Earth. And to have two similarly-oriented globes in hand, to hopefully make it easier to relate to the less visible third one, Earth. Doing a VR version is somewhere on my infinite todo list. :)

Some years ago (it may still be there today but my GoogleFoo is failing) there was an amazing exhibit outside @Bristol (a science centre in Bristol UK, now called We The Curious) - you input the name of a planet and a big physical pointer just like those village signs would swing round and point in a direction. On the side of the pointer it’d say the number of miles to the planet.

It was a super cool juxtaposition of screen / digital / real and very thought provoking. The counter intuitive nature always got me and my kids: pointing down through the floor to Jupiter or whatever when one’s intuition is always that everything in the sky is “above you”.

I wish I could find details of it on the web!

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