this post was submitted on 03 May 2025
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Proposed 24 percent cut to NASA budget eliminates key Artemis architecture, climate research (spaceflightnow.com)
submitted 1 week ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] conditional_soup@lemm.ee 24 points 1 week ago* (last edited 1 week ago) (1 children)

So, tl;Dr

  • The Mars sample return has been shitcanned

  • The lunar gateway orbiter (or was it a transitor?) has been shitcanned, or at least our funding for it has. There are other internation partners that we're leaving on the hook here.

  • Artemis and Orion got dumpstered past Artemis III in favor of "more competitive commercial launch systems". I'll give you one guess who that contract is going to go to, though that's not part of this announcement.

  • No mention of the Roman space telescope, but climate monitoring satellites got the boot too

  • Human space exploration is prioritized in the new budget, with 6 billion to work towards establishing a lunar base and 1 billion for human mars exploration (lol, lmao even. Here's a hundred dollars to go explore the Pacific, have fun, kiddo)

[–] pennomi@lemmy.world 6 points 1 week ago (1 children)

To be fair, the whole Artemis program was a bit of a dumpster fire. Needlessly complex architecture when we could have just yeeted like three or four pieces into space with Falcon Heavy, assembled in orbit, and then landed/returned with a traditional lunar landing vehicle.

[–] conditional_soup@lemm.ee 7 points 1 week ago* (last edited 1 week ago) (1 children)

So I've heard, but I think I heard recently that NASA had made a lot of headway getting to program on track, and it was supposed to have a heavier payload than even starship by a good margin. It's basically a modern Saturn V program. Idk, I'm skeptical that it was dumpstered based on evidence and that this wasn't just a handy premise for setting up more gibs for Elon.

[–] pennomi@lemmy.world 3 points 1 week ago (1 children)

Oh for sure, SLS is the heaviest lift rocket in the world by a large margin right now. It just can’t launch frequently or cheaply.

Cancelling it while Starship is still so flaky is a bad move IMO.

[–] conditional_soup@lemm.ee 2 points 1 week ago

That's what I was thinking as well. As flaky as private companies can be, we could well end up right back at no heavy lifters if Elon wakes up one day and just decides "eh, fuck it"