Alternatives
Products that do what Put Greenland on the Moon (interactive map for size compare) does
Just built a small tool and created some comparsion of country size vs. planets. Greenland seems larger than i thought. The tool allows you to drag a counry to other planet to see the size there.
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I built an interactive 3D globe to visualize climate change. Drag a temperature slider from -40°C to +40°C, set a timeframe (10 to 10,000 years), and watch sea levels rise, ice sheets melt, vegetation shift, and coastlines flood... per-pixel from real elevation and satellite data. Click anywhere on the globe to see projected snowfall changes for that location. --- I'm an amateur weather nerd who spends a lot of time on caltopo.com and windy.com tracking snow/ice conditions. I wanted to build something fun to imagine where I could go ski during an ice age. I used Google Deep Research…
Mar 2026 · terrashift.io
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2019 · github.com
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Hey HN, I really enjoy learning about other countries' landmarks, culture, capitals, and more, so I decided to make a simple quiz/trivia game about geography for fun. :) Currently, there are 3 quizzes available: flags, capitals, and landmarks, with more to come soon. I would love to hear your feedback! Thanks.
2024 · geoo.fun
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I don't always all-caps, but when I do, it's because every word is an acronym. The NASA HORIZONS[1] system is a telnet service that provides planetary data and ephemeris tables, which are basically coordinate-time plots for celestial bodies. It's pretty archaic and somewhat difficult to use, especially since it just dumps out text tables and you have to parse it to do anything with it. Some projects, e.g. KDE Marble, use it as a data source and typically just consume it with a little procedural code to get what they need. I wanted to provide a full-fledged library for it so that you can…
2013
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Hi HN! I’ve spent the summer of the past 2 years building The Atlas, a procedural universe simulator that generates 1 sextillion galaxies (10²¹) from a single mathematical seed. Think No Man’s Sky meets theoretical physics, but running entirely in your browser. Everything is purely deterministic, the universe is calculated from SHA-256 hashed seeds using the golden ratio as primordial constant. There’s no database, no pre-saved data, just pure math. Time itself is treated as a coordinate, so the universe exists as a 4D structure where any moment can be computed on demand. Shut it down for…
Sep 2025 · github.com
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The other day I googled "Where is Artemis" expecting to find a tracker showing me the position, but instead getting results from news articles without live data. I eventually found the NASA tracker (https://www.nasa.gov/missions/artemis-ii/arow/) and https://artemislivetracker.com/, but neither is optimized for mobile and frankly I found them both underwhelming. The domain (whereisartemis.com) was available and I thought "someone should use that", bought the domain and got started. Hopefully, this is something that can be extended for future…
Apr 2026 · whereisartemis.com
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I built a browser-based simulator of NASA's Artemis II mission — the first crewed lunar flight since Apollo 17. You fly the actual mission profile: launch to parking orbit, raise to High Earth Orbit, fire Trans-Lunar Injection when the Moon is in position, swing behind the Moon, and return to Earth. The physics uses RK4 integration with real Earth and Moon gravity. Have fun experimenting with what happens if you don't time it right!
Apr 2026 · artemis.radish.build
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Hi HN, I'm a solo dev working on a space RTS game set in the Milky Way galaxy, containing currently known stars and exoplanets with their real characteristics, the remaining stars are procedurally generated. In the online mode, all players are in the same universe, and the world is persistent. You compete with other players to take back the Solar System and end your exile. Players can always retreat to the periphery to regain strength and rebuild their fleets as needed. It also includes an procedural spaceship generator that allows creating your own spaceship designs. Spaceships visuals…
Feb 2026 · stardustexile.com
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Hi HN. I had faced an issue where I wanted to know how a place I was travelling to looked like. Like everyone else I looked at google maps and snap chat too. But Google streetview images were usually old and snapchat snaps lacked control. So I built GeoQuests for anyone who wants to know what’s going on on Earth. You drop a quest at a real location. People see it on the map, go there, and complete it by taking a photo when they’re close enough. The app checks the image's GPS coordinatee, time of the image and if the image fits the request's description. I am using Gemini to verify the image.…
Feb 2026 · geoquests.io
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I've been building a bunch of US geography tools/games/visualizations and thought folks on HN might like this one. There are also drive-time and bike-time tools available on the same page. For folks interested, all of the data comes from OpenStreetMap and the US Census at the moment - OSM for routing and points interest and the US Census for population data. Anonymous users can use it 5x/day. I put up a waitlist page to gauge interest in a paid version but there's no way for the public to make an account - feel free to bypass the limits in an incognito tab. The site is US-only…
Jul 2026 · blockatlas.com
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Greetings Hacker News family! I'm excited to share with you the first version of our AI-powered travel planner. I'm a digital nomad/tech geek who loves traveling but admittedly am lazy about trip planning, so I created a tool built on ChatGPT that could help me jump start that. I simply enter a destination, the # of days, a budget preference, and it spits out a full travel itinerary with highlighted points of interest. The problem: Trip planning can be overwhelming and time consuming. While some may find excitement in planning, many folks are overwhelmed by the prospect of figuring out…
2023 · planitearth.travel
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As a hiker and (ski)mountaineer I've always been a bit disappointed of how most apps fail to properly depict the topography while analyzing GPS tracks. (I know that Strava offers some kind of 3D view by now, but I still wanted to build my own thing) That's why I started working on https://cubetrek.com It's still very experimental, but you can give it test-drive now. Any feedback appreciated. It essentially renders your GPS Track as a 3D model within the topography. As an example, here's the Bishorn, a 4000 m peak in Switzerland: https://cubetrek.com/view/5807…
2022 · cubetrek.com
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