To The Moonjs And Back

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SJ Games Daily Illuminator for April 25, 2026

To The Moonjs And Back

If you're like me, you've been a bit more into lunar travel in recent weeks, thanks to some lucky, lucky astronauts who got to go farther away from Earth than anyone's ever managed before. Well, everything new is old again, with Moonjs: An Online Apollo Guidance Computer (AGC) Simulator. It's a JavaScript-based web-browser simulation of the Colossus 249 computer that was used with the Apollo 9 mission. It's also a port of The Virtual AGC Project that wants to bring as much of that last-millennium spacefaring compu-tech to your own modern-day systems as possible.

Check out the Apollo Guidance Computer Wikipedia page for more insight on what travelers 6 decades ago were dealing with. And remember: When the moon hits your eye as you calculate pi, that's a-Moore's Law.

-- Steven Marsh