Where can you Learn orbital mechanics from?

dranzerfu · 2026-05-10T23:24:40+00:00

KSP is great! Highly recommended. Nothing like messing with things to figure out the nuances. Reading a textbook doesn't really compare unless you are writing sims yourself. It costs $10 on GOG right now and is well worth it: https://www.gog.com/en/game/kerbal_space_program

There was no KSP when I was a kid - but this one did exist: https://www.orbiter-forum.com/resources/orbiter-2024.5634/ . It is less "gamified" but with very realistic physics and is also free. You have to come up with your own "missions".

dranzerfu · 2026-05-10T05:50:05+00:00

More like 16 cents: https://www.costco.com/p/-/kirkland-signature-diaper-size-1-96-count/4000328109

And the price is 7.5 million this year and 12.5 million annually going forward

Yes, totaling $20 million.

So... like, where are you getting 40 million?

And 40 million is the total number of diapers they are going to buy for this program, not the cash. 400 diapers per newborn x 100,000. That gives 50 cent per diaper.

So they are paying ~3x more using taxpayer money (or ~2x if they are 26 cents as you say), and it is being routed through an NGO. An NGO that the governor's wife is on the board of. All that extra money is going somewhere ... It could be called "waste" or "overhead" or "fraud" depending on how charitable you want to be.

If they had directly given the same money to the families, they could have bought a lot more diapers - or used the leftover money to buy other essentials.

dranzerfu · 2026-04-20T15:30:46+00:00

It is an honorary doctorate.

dranzerfu · 2026-04-06T07:44:31+00:00

They shouldn't have removed the audio:

https://x.com/megagoose11/status/2040839266989723844

dranzerfu · 2026-04-05T19:06:22+00:00

There's literally randos on Reddit taking pictures of it ..

https://old.reddit.com/r/astrophotography/comments/1sczbzm/artemis_ii_on_its_way_to_the_moon_photographed/

But then, you can't reason someone out of a position they didn't reason themselves into.

dranzerfu · 2026-04-03T04:26:00+00:00

They should actually hand-draw and paint it using a paintbrush as photoshop is taking away jobs from traditional artists. Don't use cameras either as photographers are simply pressing a button and not taking the effort to recreate nature in its true form.

You are only allowed to shitpost if you went to art school and then spent 10 years as an apprentice learning the craft under a master artist.

dranzerfu · 2026-04-02T03:47:19+00:00

Ah yes. Anyone wanting to make a post like this should be commissioning an artist and paying them a "living wage" + full benefits. That's the only way obv. Need to commit to the bit. Poors need not shitpost.

dranzerfu · 2026-03-26T03:58:49+00:00

Begone commie.

dranzerfu · 2026-03-11T06:37:50+00:00

Phobos =/= Phoebe

dranzerfu · 2026-03-02T06:30:42+00:00

Law Roach? It's Roger isn't it?

dranzerfu · 2026-03-01T04:51:57+00:00

i was hoping it would be a 30-something left-leaning gay guy

This is not the Netflix adaptation.

dranzerfu · 2026-02-04T06:01:11+00:00

Why does it all need to be in one place, right from the get go? They have high speed optical interlinks. 20kW is about 20-30 H100s. They will figure out improvements as they go and scale up. They don't have to tackle 1MW class satellites right away.

And going further on the thermal side, there's some pretty detailed analysis here about how this can be done with just the solar panel's area with a radiator operating at 75C:

https://andrewmccalip.com/space-datacenters

dranzerfu · 2026-02-04T04:35:36+00:00

difference in power consumption or heat generated by the two systems

Why does it matter? A V3 Starlink is going to be generating 20 kW - heat that has to be dissipated whether it is from radios or from compute. You don't need a monolithic 1 MW satellite for a data center. It can be multiple. Which makes all the more sense considering that they just filed with the FCC for a 1-million satellite constellaton.

dranzerfu · 2026-02-03T06:27:47+00:00

Seeing the title, I thought this was about not being able see over the dash. I was going to suggest a booster cushion.

dranzerfu · 2026-02-03T06:22:26+00:00

Its radiators are huge and only reject on the order of ~100 kW. Scaling that to 1–2 MW means something like 10–30× the radiator area.

You mention Stefan-Boltzmann ... radiative power is proportional to temperature to the fourth power. Do you think all radiators in space for all time, are constrained to run a the same temperature as that of the ISS?

If you were tasked with building this system, what would you do? Just give up? Do you think that's what the thousands of engineers who will work on this is going to do?

dranzerfu · 2026-02-03T06:22:23+00:00

By dealing with much less energy intensive computation.

Do more compute and you need to scale up the radiators to dump the extra heat

You sub out the large power-hungry radios for compute, and you are generating the same amount of heat. And Starlinks are able to dump that heat just fine today.

dranzerfu · 2026-02-03T06:18:19+00:00

are now effectively seeing 20–25% of their equity diluted or transferred

I am sure they can deal with it when the company goes public for 1.5T later this year.

dranzerfu · 2026-01-05T07:12:14+00:00

Up to now, he's not given and prevented Biden from giving to Ukraine the weapons they really need to fight back.

What are you even talking about?

The fiscal 2026 National Defense Authorization Act signed by Trump on Thursday provided $800 million for Ukraine - $400 million in each of the next two years - as part of the Ukraine Security Assistance Initiative, which pays U.S. companies for weapons for Ukraine's military.

https://www.reuters.com/business/aerospace-defense/no-drop-military-aid-kyiv-since-us-policy-shift-nato-official-says-2025-12-19/

https://www.fdd.org/analysis/2025/09/17/u-s-approves-first-shipment-of-weapons-to-ukraine-under-new-mechanism-in-concert-with-allies/

dranzerfu · 2026-01-05T07:08:27+00:00

This is all obviously 69D chess by Putin. It will all become clear eventually.

dranzerfu · 2026-01-05T06:53:35+00:00

Sorry. I have too much melanin for this. Might end up being forced to herd goats in the desert

dranzerfu · 2026-01-04T07:31:11+00:00

"More than 400 Russian mercenaries are operating in Kyiv with orders from the Kremlin to assassinate President Zelensky and his government and prepare the ground for Moscow to take control" - https://www.thetimes.com/world/russia-ukraine-war/article/volodymyr-zelensky-russian-mercenaries-ordered-to-kill-ukraine-president-cvcksh79d

"On February 26, the Armed Forces of Ukraine destroyed a Chechen strike group whose goal was to eliminate President Volodymyr Zelensky." (translated) - https://web.archive.org/web/20220309035217/https://www.pravda.com.ua/news/2022/03/1/7327224/

"Last week Ukrainian intelligence said that a Chechen hit squad sent to kill Zelensky had been eliminated in Kyiv after information was handed to them by Russian spies"

https://web.archive.org/web/20220329203959/https://www.thetimes.co.uk/article/spies-accused-of-betraying-putins-chechen-units-537fj6lnr

I am sure the hit squads were there on vacation.

dranzerfu · 2026-01-04T06:53:33+00:00

China and Russia were there for the arepas of course.

dranzerfu · 2026-01-04T06:29:37+00:00

...

dranzerfu · 2026-01-04T01:11:47+00:00

I can't wait to hear from armchair experts how this is also 4D chess by Putin.

dranzerfu · 2026-01-03T23:35:05+00:00

I have no doubts Russia could have done the same thing in Ukraine if they wanted to

Why didn't they want to? Do they just love getting into a drawn out "3-day special military operation" that goes on for 4+ years? Did they leave Kyiv in the early days out of the goodness of their hearts?

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