Show HN: Live Sun and Moon Dashboard with NASA Footage

Nice. I worked on a project using SOHO imagery that would do something similar where the images would be displayed on a large screen similar to the observatory on the ship from Sunshine. It was meant for a classroom for an observatory, but it just never made it. Died on the vine. It's cool to see a project with something I have actual experience in how the back end experience is like.

Update: iOS just went live minutes ago! https://apps.apple.com/us/app/lumara-sun-moon-live-viewer/id...

Site's been updated with the real badge — universal iPhone + iPad app. Free, same features as Android.

This is wonderful. I would love to set this as my desktop and screensaver if that were possible.

Would be cool to have a I button with explanation of what each of those are.

I love it but can't understand their differences without leaving the site and comming back for each.

Looking at the sun daily timelapse. It looks like the rotation of the sun is more that 1/365th of the sun diameter. What am i missing?

The Appstore button redirects to https://beeswaxpat.github.io/lumara-legal/

"Live" from the sun, minus the ~500 lightseconds it takes to get here :)

Looks refreshing. Titles can't capture visual projects like these

I'm looking forward to the Home Assistant HACS Integration.

Awesome! Now I wish screensavers were a thing again.

A neat dashboard. The usage of metric units can be improved:

> Corona ~1.2M K / Active Regions ~2M K / Hot Flares ~6.3M K / Flare Plasma ~10M K / Active Corona ~2.5M K / 10M K Hottest flare plasma

If "M" means "million", then it's correct but not the best way to express things. If "M" means "mega", then there must be a space after the number and no space before the unit of kelvin - it needs to be written as "1.2 MK", "2 MK", etc.

> The Cosmos at a Glance / 1.4M km Solar diameter

If "M" means "million", then it's correct but really not the best way to express things. If "M" means "mega", then stacking prefixes is not allowed in metric - it needs to be written as "1.4 million km" (full number word), "1 400 000 km", or "1.4 Gm (gigametres)".

> The Cosmos at a Glance / 3,000 km/s Fastest CME speed

This fact is given in kilometres-per-second, but a bunch of other facts are given in kilometres-per-hour. This makes it much harder to compare their relative magnitudes. It's similar to the problem of comparing airplane speeds in knots versus bullet speeds in feet per second.

> The Sun facts / A dynamic sphere of plasma photographed by NASA’s SDO every 12 seconds in 12 wavelengths — from the 5,000 K surface to 10-million-degree flare plasma.

Don't switch units mid-sentence from kelvins to degrees (and which type of degree?). Compare "5 000 K" with "10 000 000 K". It's correct but less common to say "5 kK vs. 10 000 kK" (kilokelvins).

> The Sun facts / The Sun’s core burns at 15 million °C — hot enough to fuse 600 million tons of hydrogen into helium every second.

I would like to note that 600 million tons (megagrams) is 600 Tg (teragrams).

> The Sun facts / The Sun’s surface gravity is 28 times stronger than Earth’s. A 150-pound person would weigh 4,200 pounds there.

I would prefer not to see the unit of pounds in the discussion, and also the sentence conflates mass with weight. Reworded: A 70-kilogram person (anywhere in the universe) would feel like they weigh 1900 kg on Earth (18.7 kilonewtons).

> The Sun facts / Sunspots are cooler regions — about 3,500°C compared to the 5,500°C surface — but are still incredibly hot.

You mostly used kelvins to talk about the Sun, but now you're using degrees Celsius for a few facts?

Before anyone accuses me of pedantry, please remember: Clarity matters in communication. We have spelling and grammar rules in English, and there are also rules in technical syntax such as expressing quantities using the metric system.

Also, people copy each other, so setting a good example is not just about the current reader, but also future writers and readers. To give an example, almost no one uses the unit "kelvin" correctly, and the bad usages keep getting propagated. Incorrect - "4000-Kelvin light bulb" (adjective form, uppercase), "temperature of 273 degrees kelvin". Correct - "4000-kelvin light bulb" (adjective form, lowercase), "temperature of 273 kelvins" (non-adjective form requires plural). The unit of kelvin should be treated no differently than joules, watts, newtons, etc.

I can see Claude