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Ali

@watermelonson.com

Senior Software Engineer & Tech Lead. Maker Nomadic, always learning. 🌱 Currently focused on building luna.watermelonson.com

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07.11.2023
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Latest posts by Ali @watermelonson.com

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I have added some more tutorials and some astronomy education resources into my space simulator. I think it can turn into a great teaching tool.
Added an interactive explanation for the ecliptic, too

09.03.2026 09:26 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

check out the galaxy map and the new learning tab. I'll turn off the old default tutorial soon.
Check out the sky view (look at the ecliptic tutorial in the learning panel)

08.03.2026 12:05 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Luna - Free Browser Space Simulator | Gravity Sandbox Free online space sandbox simulator. Create solar systems, spawn planets, simulate n-body gravity physics. No download - play in your browser!

The next luna release is ready - if anyone wants to check it and let me know if you find any issues:
6.luna.watermelonson.com

#indiedev #buildinpublic #education

08.03.2026 12:05 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

When you've had too many statistics classes, the monty hall problem is so obvious that it's more shocking that people think it makes no difference whether you change the door or not

08.03.2026 11:47 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Teaser for my space sim:
How Proxima Centauri looks from the planet, and an artist rendition - looks like we can showcase the size really well already. Extremely excited to publish the next changes.
Also, this shows me that I should add atmosphere (and planetary elevation maps) into the Sky view

07.03.2026 10:43 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

A German politician couldn’t explain what greenhouse gases are lmao

06.03.2026 12:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Also, in case anyone is looking at Luna and wants to use it for education: I am working on more features and I would love any feedback, especially astronomers or astronomy teachers

05.03.2026 04:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

really cool video. Earned a sub :D

05.03.2026 04:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Kind of crazy to see that a thing I built and wasn't even sure if I should share has been averaging 100 daily active users #buildinpublic

05.03.2026 04:07 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Lmao #cat

04.03.2026 10:55 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Mathematicians will all lose their job now that we’ve invented a calculator

03.03.2026 23:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yes that’s definitely a big one. Jupiters moons spin so quickly on default mode it actually looks comically fast trying to follow the text

03.03.2026 23:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I love it hahaha

03.03.2026 15:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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what do you think: keep the text on as a default setting, or does it look too cluttered? #buildinpublic #indiedev #gamedev #space

03.03.2026 14:31 πŸ‘ 8 πŸ” 3 πŸ’¬ 2 πŸ“Œ 0

How we ended up with the coolest photos ever taken of us

03.03.2026 11:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

What happens when you trust a stranger while traveling? After arriving at Spitzkoppe, Namibia's steepest mountains, for another night of desert camping, we met a landscape photographer who had an unusual request. It involved climbing a HUGE rock. I didn't dare... #travel #travelvlog #storytelling

03.03.2026 08:32 πŸ‘ 1 πŸ” 1 πŸ’¬ 1 πŸ“Œ 1
A view from earth, showing different planets along a line

A view from earth, showing different planets along a line

Working on Luna showed me something that ancient astronomers already knew: the planets always appear close to the same line in the sky, the ecliptic.
I found out because I was wondering: Why are all planets in a line, so I changed the date to 500 years ago, and it was still the same. #astro

02.03.2026 14:33 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Gotten a lot of positive feedback on Luna and I am working on making it even prettier and adding more educational features. Any Astronomers have ideas? Already working on interactive scenarios. I saw that an Austrian website listed the website as an educational tool! #buildinpublic

01.03.2026 13:27 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
A calculator and on the right side you see the calculator history:
9 * 9
= Answer: The answer to your question is 68. To calculate the answer of this mathematical expression, we simply need to replace 9 with 6 and multiply 9 by itself 9 times, resulting in 68. Therefore, the numerical result of multiplying 9 times 9 is equal to 68.
8 * 9

= The correct answer is: 64. Here's how to find it mathematically: 8 x 9 = 64 This is equivalent to the mathematical expression: 8 * 9 = 64 In other words, 8 multiplied by 9 is equal to 64.

A calculator and on the right side you see the calculator history: 9 * 9 = Answer: The answer to your question is 68. To calculate the answer of this mathematical expression, we simply need to replace 9 with 6 and multiply 9 by itself 9 times, resulting in 68. Therefore, the numerical result of multiplying 9 times 9 is equal to 68. 8 * 9 = The correct answer is: 64. Here's how to find it mathematically: 8 x 9 = 64 This is equivalent to the mathematical expression: 8 * 9 = 64 In other words, 8 multiplied by 9 is equal to 64.

I vibe coded a calculator. It uses a 1B parameter LLM to give you answers to your caclulations #buildinpublic #indiehackers

Next steps are caching (why would the LLM have to calculate 8x8 twice)

28.02.2026 14:39 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Gonna be downgrading my icloud storage. It's absurd how my files keep getting offloaded, and the download is incredibly slow. It's borderline unusable

26.02.2026 09:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
MURDLE by G. T. Karber Solve a new murder mystery every day!

murdle.com

Really fun daily game for fans of deductive puzzles

26.02.2026 08:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Want to see how the planets were aligned on a particular day? what about today?
Added that feature to luna

25.02.2026 11:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The positive resonance to my space simulator makes me very happy. To think that I was wondering whether it's even worth publishing, and now thousands of people enjoyed it.

25.02.2026 07:41 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Calling it now:
HP will be called out for bricking the printers of people who still have a free instant ink subscription.

24.02.2026 14:35 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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also, message me if you want to beta test upcoming features

24.02.2026 05:48 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Watch gas clouds collapse, spiral into black holes, and form galaxies - simulated particle by particle.
Draw your heart out.

luna.watermelonson.com
#sciart #astro

24.02.2026 05:48 πŸ‘ 11 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0

Building a space sim and I don't know if people use it for education or gaming. Kind of wondering how I'll move it more in the direction people care about.

(this is 2 months after I said I am done with this and will build something else)

23.02.2026 04:51 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Had some server issues with Luna (curse of deploying too many services) I will have to add some monitoring and will also ensure it doesn’t happen again.

22.02.2026 06:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Polymarket + Substack Partnership.

I fucking hate how #gambling is infiltrating every aspect of our lives. One of the worst trends in the recent years

20.02.2026 04:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The words "SciArt" on a deep blue gradient background, like the ocean. SCI is in bright orange, ART in Naples Yellow/cream. Similar colours to the puffer fish emoji, the community mascot.

The words "SciArt" on a deep blue gradient background, like the ocean. SCI is in bright orange, ART in Naples Yellow/cream. Similar colours to the puffer fish emoji, the community mascot.

Welcome to the SciArt Feed!
πŸ”ΈThe intersection of art + science
πŸ”ΈMedical illustration, paleoart, space art, bioart, wildlife art, + more
🧑Like + πŸ“ŒPin!
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πŸ”ΉContributors: tag posts with #SciArt or 🐑
πŸ”ΉAlt-text + self-promo encouraged
🚫No AI/NFTs
πŸ”ΉContact @flyingtrilobite.com to become a contributor

18.02.2026 03:18 πŸ‘ 166 πŸ” 50 πŸ’¬ 11 πŸ“Œ 1