A US military exercise to launch a satellite on short notice (arstechnica.com)
62 points by jonbaer 3 days ago
mysteria 43 minutes ago
They published an official press release on this on the 22nd.
khurs 2 hours ago
Good spot by whoever noticed it!
ck2 41 minutes ago
Can we swap the US Military and NASA budgets for just one year please?
Just one year
It would be AMAZING
Or even what we fund Israel's 2/3 of all their weapons are bought by US
We'd have 10% speed of light probes going outside of solar system already
Well at least Nancy Grace Roman L2 Telescope is launching, hope it goes perfectly
WarmWash 29 minutes ago
The military budget is a jobs program that also keeps a (near bare minimum) level of industrial capacity afloat.
Its why no politician left or right is really interested in cutting it. If you browse open contracts, you'll see they that they overwhelmingly buy rather banal things and spend comparatively little on the "killing people" parts.
malfist 18 minutes ago
What do you think NASA is? NASA is so expensive because it's a jobs program. There's no other reason for Boeing to have factories in so many states for building satellites.
WarmWash 4 minutes ago
pc86 16 minutes ago
tclancy 16 minutes ago
Great. Can we change it to just be the non killing part for a few years until the bad project ideas fully die off?
cg5280 34 minutes ago
In 2024, the average American spent about $17,000 on taxes. Nearly $4000 of that went to the DoD, about $3500 went to interest on federal debt.
I think it’s fun to think about it in this way. I personally spend hundreds of dollars a month on war.
tshaddox 3 minutes ago
Those numbers look way off. Are you making the common mistake of ignoring mandatory spending? In 2024 defense spending and net interest were each about 13% of federal spending.
germinalphrase 29 minutes ago
You have a source to share for that framing of the tax spend?
blobcode 15 minutes ago
ck2 13 minutes ago
Defense spending in the USA is double what is publicly published
There are all kinds of dark budgets and stuff spun off into "civilian" programs that actually aren't
The published cost of Iran War is like $30 Billion when it is obviously over $100 Billion by experts and that doesn't including replacing all the missiles
TWENTY-ONE TRILLION DOLLARS since 9/11 spent on defense 2001-2021
* https://ips-dc.org/report-state-of-insecurity-cost-militariz...
imagine how much food clothing shelter for the US and WORLD that would buy
we'd have humans on Mars already with that budget not even knowing now how to stop space-blindness and bone-loss
throw48842975 3 minutes ago
The US gives Israel $3.8B a year (and 2/3 of their weapons are _sold_ by the US not bought). The budget of Nasa is $25B.
But by antisemite math and logic says we’ll get 10% light speed.
chris_money202 7 minutes ago
Or hear me out, we improve life here on Earth...
avmich 37 minutes ago
Can we really accelerate any probe to faster than 1% c? Or 2% c?
kimixa 2 minutes ago
No, not even close. The issue is simply exhaust velocity and reaction mass, that leads us into the tyranny of the rocket equation - in that you have to carry that reaction mass with you and accelerate that mass too. Even if you had magic infinite energy - e.g. it's supplied externally by a laser or similar.
Using the theorized maximum of 31km/s exhaust velocity of project orion (much higher than any current propulsion technologies) you'd need to have thrown out something similar to 10^42 times the probe's mass out the back at that 31km/s velocity.
That means to accelerate a 1kg probe to 1%c you'd need to have used a reaction mass equivalent to a few trillion suns worth of mass.
Hardly seems worth it.
altruios 15 minutes ago
One idea that stuck out to me was an array of giant thin solar powered spinning metal Crookes radiometers magnets in a line to make a railgun-like launcher. Materially cheap to do.
Related, but not exactly what I was thinking of: https://www.centauri-dreams.org/2025/08/05/a-rotating-probe-... The original source I'm thinking of may be lost to time :( I'll keep hunting.
tclancy 15 minutes ago
Per new Space Force regulations, we are using F for an adjusted speed of light. We are currently able to achieve 1.48F.
patagurbon 35 minutes ago
We have the physics but not the engineering. See the Breakthrough Starshot project for instance
r2_pilot 35 minutes ago
Yes, with lasers or nuclear energy
mschuster91 15 minutes ago
> Or even what we fund Israel's 2/3 of all their weapons are bought by US
And all of the money the US gives to Israel is earmarked for American products.