Live data from Hacker News

Project Hail Mary – Stellar Navigation Chart

valhovey.github.io

71–80 of 255 posts

Re: Project Hail Mary – Stellar Navigation Chart

#71
post #9

Just FYI the sizes of the planets, stars, and their orbits are not to scale at all. To get an idea of how empty space is, there are 63,360 inches in a mile, and 63,239 astronomical units in a light-year. So if you scaled everything down such that Earth was 1 inch from the Sun, Neptune would be 30 inches away and Alpha Centauri would be 4 miles away. If you were using a 4k display and had the Sun and Alpha Centauri vi…

FYI we have a up to scale model of the solar system in Sweden https://en.wikipedia.org/wiki/Sweden_Solar_System

Come visit!

Re: Project Hail Mary – Stellar Navigation Chart

#72
post #60
post #3

Elite Dangerous does it better. Pretty but idk.. get the AI generated feeling.

What specifically about this feels AI generated. It might be, IDK, but I'm not seeing any tells, so wondering if you could expand.

I'm not saying it looks AI generated, but AI made it possible to polish things to a level that very few people took the time to ever do themselves.

This is a great thing, but it's also a tell since we all saw the UIs people were building by hand pre-AI.

That said, I don't think it matters. What matters is whether it's low quality.

Re: Project Hail Mary – Stellar Navigation Chart

#74
post #56

Hi there! This is Val, I made the star chart. There's a little "about" blurb you can open in a modal on the site, but I wanted to mention that this demo uses the amazing GAIA DR3 dataset from ESA. I have a Python script that renders all 1.8+ billion stars into custom images, which is what I used for the skybox. The star positions and colors all use the GAIA data (save for a few bright stars not in the set). The data…

but why solar system is so out of scale?

Re: Project Hail Mary – Stellar Navigation Chart

#75
post #9

Just FYI the sizes of the planets, stars, and their orbits are not to scale at all. To get an idea of how empty space is, there are 63,360 inches in a mile, and 63,239 astronomical units in a light-year. So if you scaled everything down such that Earth was 1 inch from the Sun, Neptune would be 30 inches away and Alpha Centauri would be 4 miles away. If you were using a 4k display and had the Sun and Alpha Centauri vi…

FYI we have a up to scale model of the solar system in Sweden https://en.wikipedia.org/wiki/Sweden_Solar_System Come visit!

Wow. Such an awesome idea! Thank you, you made my day

Re: Project Hail Mary – Stellar Navigation Chart

#76
post #23
post #2

I am so happy this movie did great, the book was great Similar to me books: Bobiverse, Long Way To A Small Angry Planet I'm not a heavy reader This site is cool, I want to get to know stellar navigation stuff for astrophotography watching a video like this where they pull up star charts to point the telescope at it pretty cool https://www.youtube.com/live/TexqPMQMyZg?si=oEnvrxW21-D0VXGV... Tangent I'll throw in here,…

> I guess it looks like it's down since it's a slice but the effect is an inward sphere? Yes, gravity is a vector field: every point in space near a heavy body has a vector pointed at the center of the body with a magnitude of the field strength. https://en.wikipedia.org/wiki/Gravitational_field Whenever someone uses fabric sheet analogy, they need to shout that the X-Y of the sheet is a 2 dimensional analog of X-Y-Z…

The next thing they do after showing you the sheet is to roll a ball around the stretched part to demonstrate an orbit. Explaining how that analogy works starts to take more math than the actual field you’re trying to explain!

Re: Project Hail Mary – Stellar Navigation Chart

#77
post #56

Hi there! This is Val, I made the star chart. There's a little "about" blurb you can open in a modal on the site, but I wanted to mention that this demo uses the amazing GAIA DR3 dataset from ESA. I have a Python script that renders all 1.8+ billion stars into custom images, which is what I used for the skybox. The star positions and colors all use the GAIA data (save for a few bright stars not in the set). The data…

Great map. Wish the star map in Starfield was this nice!

Re: Project Hail Mary – Stellar Navigation Chart

#80
post #56

Hi there! This is Val, I made the star chart. There's a little "about" blurb you can open in a modal on the site, but I wanted to mention that this demo uses the amazing GAIA DR3 dataset from ESA. I have a Python script that renders all 1.8+ billion stars into custom images, which is what I used for the skybox. The star positions and colors all use the GAIA data (save for a few bright stars not in the set). The data…

but why solar system is so out of scale?

Because it’s more cool and important.
Post reply on HN