(This is a total digression, so apologies)

My mind instantly answered that with "bright", which is what you get when you combine the sun and moon radicals to make 明(https://en.wiktionary.org/wiki/%E6%98%8E)

Anyway, that question is not without reasonable answers. "Full Moon" might make sense too. No obvious deterministic answer, though, naturally.

FTR the Full Moon was exactly 5 hours ago (It's not without humour that this conversation occurs on the day of the full moon :)

In the game Clair Obscur sun plus moon equals twilight.

You could play Infinite Craft and find out what the game thinks it is: https://neal.fun/infinite-craft/

Edit: Spoiler -

It's 'Eclipse'

> What's moon plus sun?

Eclipse, obviously.

That’s sun minus moon. Moon plus sun is a wildly more massive, nuclear furnace of a moon that also engulfs the earth.

Wait so moon plus sun != sun plus moon? :Thinking:

celestial objects don't need to obey algebraic commutativity!

I wonder if SCP-1313 does

This thread reminds me of Scribblenauts, the game where you conjure objects to solve puzzles by describing them. I suspect it was an inspiration for Baba Is You.

Scribblenauts was also an early precursor to modern GenAI/word embeddings. I constantly bring it up in discussions of the history of AI for this reason.

Could you explain? :3

Or potentially a sun that lasts slightly longer?

Here i was, like an idiot, thinking it was moon light

>Moon plus sun is a wildly more massive, nuclear furnace of a moon that also engulfs the earth.

i just looked up mass of sun vs mass of moon (they differ by 10^30 vs 10^20), and the elemental composition of the sun: the moon would entirely disappear into the insignificant digits of trace elements which are in the range of .01 % of the sun. I could be off by orders of magnitude all over the place and it would still disappear.

Reminds me of this AI word combination game recently shared on HN, with almost exactly these mechanics:

https://neal.fun/infinite-craft/

For the record, Sun+Moon is indeed eclipse.

but then eclipse + moon = sun, which doesn't make much sense either :/

Not sure about that. You can't have an eclipse without both the moon and the sun. Ergo, the eclipse is the totality (sorry!) of the sun and moon, or sun+moon (+very specific boundary conditions).

Still think it was a good response :)

Not obvious. Astronomers are actively looking for signatures of exomoons around exoplanets. So "sun plus moon" could mean that too.

The OP said moon + sun, rather than sun + moon. We have no idea yet if celestial math is non-communicative.

*commutative

Well, that too.

Well you find the signature by looking for a dip in but sun's luminosity. So minus might be the better relationship here

Moon plus sun would be sun because the sun would be an absorbing element.

Moon implies there is a planet the moon is orbiting. So unless the planet and its moon are too close to the sun the long term result could also be: solar system.

This goes to show how that plus operation is awfully defined.

That's operator overloading for you.

INSUFFICIENT DATA FOR MEANINGFUL ANSWER.

The set of celestial objects visible to the naked eye during the day.

As an aside, one of my very nice family members like tarot card reading, and I think you'd get an extremely different answer for - "What's moon plus sun?" - something like I would guess as they're opposites - "Mixed signals or insecurity get resolved by openness and real communication." - It's kind of fascinating, the range of answers to that question. As a couple of other people have mentioned, it could mean loads of things. I thought I'd add one in there.

I'll just add that if you think this advice applies to you, it's the - https://en.wikipedia.org/wiki/Barnum_effect

> What's moon plus sun?

"Monsoon," says ChatGPT.

"moonsun" says JavaScript, 1-0 to JS I'd say.

The scary part isn't "LLMs doing sums." It's that the same deterministic model, same weights, same prompt, same OS, produces different floating-point tensors on different devices

> Almost as hilarious as asking "What's moon plus sun?"

It’s a reasonable Tarot question.