456 points•Muhammad523•9 days ago•390 comments•

390 comments

jumploops9 days ago
I worked on (a very small part of) the ExoMars rover (now called the Rosalind Franklin[0]).

It was supposed to launch in 2018, then was pushed to the early 2020s on a Russian rocket. For obvious reasons, it got pushed again, now launching in 2028.

The state of the world isn't great for space exploration, but I'm hopeful this mission will be revived at some point in the future.

[0]https://en.wikipedia.org/wiki/Rosalind_Franklin_(rover)

Teever9 days ago
As an outsider who is very interested in space exploration I'm very flummoxed by the state of space exploration.

With the price of launches so low compared to only 20 years ago due to advancements in launch technology and the increased cadence of launches it seems like it should be easier to do these kinds of missions and that there should be more, cheaper missions that are willing to take risks because the per mission cost is so much lower.

Can you comment on why that doesn't seem to be happening? Why aren't we covering Mars in cheap rovers and satellites?

nancyminusone9 days ago
For both operating mars rovers, the launch vehicle cost was about 10% of the total. So even if the providers paid you to launch, you'll still be picking up 80% of the remainder. Cut the development cost by 10x? Still in the hundred million dollar range. So still only large goverments can afford. And none of them would approve a bunch of rovers, they'd just see a discount on the one rover they already don't want to give you - "you have one, isn't that enough? Why do you need two?"
nomel9 days ago
We've had 8 launches in the past 3 years, with only 10 in the combined 17 years before [1].

Seems that the reduced cost is being taken advantage of. And, make sure to exclude the drastic reduction in non-lunar launches in your cost comparison for lunar launches.

[1] https://en.wikipedia.org/wiki/List_of_missions_to_the_Moon#2...

Yizahi9 days ago
I won't find it now, but I distinctly remember watching a video about some big NASA event a few years back but when Starship Booster (first stage) had been flying already. Basically none one at the event even considered switching paradigm from ultra custom probes and landers built from unobtainium and unicorn blood in favor of the way cheaper and way less robust, almost mass market hardware, to be launched once every 10 months instead of every 10 years on a regular basis. (PS: I know all the laundry list of arguments against this approach, and they are not that convincing at NASA scale). And I won't even talk about Space Disgrace System for manned flight.

NASA is stuck in the past and does it consciously and voluntarily.

ak6te9 days ago
The nature of science and exploration is that every mission is harder than the last, which is a reasonable first order proxy for expense. For NASA specifically, there has also been a large focus placed on making delivery to orbit and the moon a commercial service rather than something that NASA has to do in-house which has held us back.

And as others have said, there is really no such thing as a cheap rover. As a recent example, there was recently a push by NASA HQ to refurbish a Mars rover engineering unit (basically a one-to-one copy of the one sent to Mars, kept at JPL for use in ops planning and issue debugging) into an operational lunar rover. The estimated cost to take this existing piece of hardware and make it fully flight ready and suitable for the new mission was hundreds of millions of dollars.

somenameforme9 days ago
A practical issue with government spending is that it's self motivated. Politicians' only job is to get elected. And one big way to do that is by ensuring that money goes to your district, creating jobs and opportunities. This is how you get things like the SLS, nicknamed the Senate Launch System. It was a tremendous waste of money, spending on the order of decades to build a launch system that was arguably obsoleted years before it completed, and will in any case be far too expensive to ever regularly use.

But the reason we kept throwing good money after bad is because the goal was never really about making a good launch system. It was all about sending money and creating stable long-term jobs in various states and districts, actively supported by the politicians representing those areas. So you had parts being built all over the place, in a way that just sends costs skyrocketing, but that's okay - because the rocket isn't the goal.

Of course the government itself is aware of this problem, much like fishermen are aware that overfishing is self destructive in the long-run, even if they are nonetheless individually motivated to do exactly that. So I think this was why the big push for commercializing space. And I think we'll ultimately see the exact same thing with deeper space missions and technologies. SpaceX's goal is Mars and I see no reason to think they will fail there. At that point, costs for various Martian missions - be they sample return, rovers, or whatever else - should be relatively negligible relative to today. Exactly as happened when we went from ferrying people to the ISS using the Space Shuttle, to when we started launching them on Falcon rockets.

fireflymetavrse9 days ago
Beyond earth orbit launches actually is not that low [1]. MSR has a long history of revival and cancellation.

[1] https://spacestatsonline.com/launches/beo

imglorp9 days ago
Would it make sense to send better robotic analyzers there than to bring the samples back here? Fighting gravity and kilometers involves spending many billions on return; a lesser amount could be spent on surface activities.
saddat8 days ago
Science should stand above politics . Europe and Germany are crazy to develop a great x-ray satellite „eRosita“ together with Russia , shoot it in space , performs great, but then stop operating it because of politics . It is tax paid , so who decides ?
Muhammad5239 days ago
I'm curious to know on which part you worked on, could you tell us?
jumploops9 days ago
Sure! I worked on the digital logic that connects the rover to one of the scientific instruments on board, specifically the Mars Organic Molecule Analyser[0].

[0]https://en.wikipedia.org/wiki/Mars_Organic_Molecule_Analyser

Varelion9 days ago
Don't mince words. Say it with your chest. The world state is being ruined by authoritarianism appeal to small-minded people's worst basal instincts, lack op apathy, and lack of curiosity. And unchecked capitalism, but I really shouldn't even need that 'unchecked' qualifier.
aprentic9 days ago
Space exploration is moving forward. It's just being driven by other countries now.
angelgonzales9 days ago
This mission is representative of what JPL has become. Leadership there increased the cost of the program to $11B and would not bring the samples back until 2040, they also designed the mission around legacy rockets like Ariane 64 instead of working to lower costs and increase capacity by working with industry and designing around Starship or New Glenn. The moon missions brought back 842 pounds of rocks and MSL would bring back 1.1 pounds. It’s directionally better to wait for manned missions to Mars so we can bring back tons of rocks or even do the research on Mars itself. It seems like the JPL mission is maximized to provide jobs to researchers and maximized for mission complexity rather than just buying rocks from a contractor with quoted price and lead time.

I’d be interested in working there to help accelerate the program but I’m not if I would get support internally.

3lambda9 days ago
> It’s directionally better to wait for manned missions to Mars so we can bring back tons of rocks or even do the research on Mars itself.

I'm worried it's arguments like this that doomed MSR [0]. Why spend 11 billion to get a couple rocks back in 2040 when Starship will be sending astronauts in 2030? But now it seems the near term goals of the Starship program are changing. At this point, who knows when we'll send people to Mars?

> buying rocks from a contractor with quoted price and lead time

I don't know about you but I'm not hearing anyone say they've reserved Starship mass-to-Mars-and-back. You're right that we should rely on private industry more. The CLPS program is the most comparable example (although time will tell whether it's a good one). But for a mission with the risk tolerance of MSR, the CLPS model doesn't work, IMO.

And meanwhile the Chinese are planning on launching their sample return in 2028. They're gonna beat us by a decade.

[0] My thoughts here are partially from this great blog post: https://mceglowski.substack.com/p/who-is-the-villain-in-mars...

aeternum9 days ago
Portugal was the first to find a direct sea route to India and had a 100 year head start with the trade route but they still got mogged by the Dutch East India Co in terms of cargo tonnage shipped.

We should aim for the long game. An insanely expensive one-time mission using disposable rockets to analyze rocks that we've already analyzed with rovers is probably not the best path.

squidlib9 days ago
It’s totally feasible that starship wouldn’t need to rely on humans to get the rock - a scouting mission to mars with starship could likely use robotics to grab a few rocks, sent years ahead of humans. The only really technical hurdle between then and now is proving starship orbital capability (this month), recovery and relaunch from mars, refueling, some robots.
Balgair9 days ago
Yall, we're not putting humans on Mars anytime soon.

Okay, okay, rather we're not getting humans back off of Mars anytime soon.

Landing is by far the easy part. MSR was partly a mission to see how hard it really is to get anything back into space from the Martian surface. If you can manage a pound, you can probably then manage 3 or so 180 pound humans and all their safety support.

Like, think of it. You somehow have to land a fully fueled rocket on freaking Mars. No site prep, near vacuum and no aero breaking, very expensive and nearly impossible second chance.

Fine fine, you just land the shell and then refuel on Mars with some form of automated fuel refinery on Mars. Like, if you have robots that can do that, you've ended capitalism already and have no need for humans in the first place.

Im not saying a human return mission is impossible, but it is just so very much harder than a Trillion dollar Apollo program lets us believe.

joquarky9 days ago
> meanwhile the Chinese are planning on launching their sample return in 2028. They're gonna beat us by a decade.

So what advantage, in the realm of all possibilities, would this give China that we should be seriously concerned about?

We have such bigger existential threats right now that my emotional response to the quoted text is an aggressive lack of concern.

etiennebausson8 days ago
Starship hasn't even reached orbit, why are you putting it on a list as a viable solution for a mars mission?
khalic9 days ago
Ariane 6 is legacy? lol
edg50008 days ago
Wasn't it considered a kind of failed project because it's so incredibly expensive to launch with Ariane 6?
alas449 days ago
Also cringed at this
poulpy1239 days ago
There will not be l'année mission to Mars lmao
peri-cl9 days ago
This article only obliquely mentions in the last paragraphs, but there's a parallel Chinese program that recently brought back samples from the moon, and will attempt Mars sample return, launching in 2028,

https://en.wikipedia.org/wiki/Tianwen-3

lukeify9 days ago
The NASA/ESA MSR was of substantially higher quality, mind you. The M2020 rover specifically picked up samples of high scientific value to be returned. The Chinese return mission will only return what it finds from its direct landing site.
ok_dad9 days ago
It would be cool if NASA worked with the Chinese agency to collect those cores using their rocket, it would be a win win.
fnordpiglet9 days ago
Right - because the best engineering is done in a high stakes big bang of upmost complexity rather than iterative improvement?

Not only are political officers making science decisions, but nasa lost its way in the depths of over engineered missions due to requiring a senator to be bribed by the quantity of home stage work.

thinkcontext9 days ago
> The NASA/ESA MSR was of substantially higher quality

If it doesn't happen then its of worse quality.

XorNot9 days ago
It's not like they're going to do it only once though, and some is a lot more then zero.
Muhammad5239 days ago
I think that the scientific community really doesn't care about who will bring the samples back, but simply wheter someone will do it and share them with the world
reaperducer9 days ago
it's just that NASA has given up on being the one to do it first.

No need to. Mars delivers:

https://www.nytimes.com/2026/09/20/arts/who-owns-this-chunk-...

notabee9 days ago
Anyone wanting to be involved in the future of scientific research should probably start learning Mandarin. We're going the way of the Soviets, where political officers will quash any science that doesn't fit their ideology. https://arstechnica.com/science/2026/09/trump-planning-to-ha...
amarcheschi9 days ago
A few hours ago I was looking for some food safety information, found a US gov website posted on reddit and

The website wasn't available anymore

FlowingRiver9 days ago
I think the defining moment is that IF China gets man back to the moon before the US, that will be the moment when it becomes too hard to ignore. That is the new political high ground.

The Chang’e missions plan for this in 2030 and they have hit every target to date. While the US is currently targeting 2028, it isn't inconceivable that it can slip by two years.

gamblor9569 days ago
where political officers will quash any science that doesn't fit their ideology

China also does this. We just don't hear about it because they also quash the reporting.

yieldcrv9 days ago
Mandarin is high on my list, but its almost all for business and the people wouldn't be interested in me (different melanin). Whereas socially our Ukrainian and Russian refugees are way more interested in me, and there's potentially some business anyway.

More business in China though, tricky to prioritize since I'm doing any of this for the abundance of intimacy and the slavic people come with that, for me. I need to learn Mandarin and Russian.

at least Cantonese is no longer seriously a contender in my sphere. That was distracting

jmclnx9 days ago
> it's rather that NASA has (?) given up on being the one to do it first

I think the Trump admin decided since it will not make them a profit, like other scientific research already canceled, it is not worth doing.

aarjaneiro9 days ago
"makes sense, it's financially unfeasible"

> Engages in pointless wars

8fingerlouie9 days ago
How long would the Iran war have to continue to have cost as much as to fund the NASA mission, or have we already passed that point ?

Also, the war cannot be won without boots on the ground, and that is also not feasible as you need 2-4x the amount of soldiers that the enemy nation has to successfully conquer a nation (as per the US Army / CIA handbook), and Iran has about a million soldiers, so 2-4 million US soldiers would be required for that.

It would literally turn into another Vietnam or Afghanistan. Unfriendly terrain where everything needs to be flown or sailed in, hostile population where the US has been painted as the "big devil" for 50+ years.

Speaking of Afghanistan, Taliban had 58,000 "soldiers", and we sent almost 600,000 soldiers there (peak strength) and still lost the war, and Iran is very similar to Afghanistan.

On the other hand, a US retreat would mean Iran keeps the chokehold on global oil reserves, and are free to develop nukes, with any future missions by the US to limit their nuclear weapon research resulting in a worse situation than before.

So yeah, basically a forever war, one that everybody that knows even the tiniest bit about the Middle East has advised against pretty much forever.

tim3339 days ago
Site here says $113 bn so well past it. More like Mars mission a month. https://iran-cost-ticker.com/
sph9 days ago
Unless the President decides to eat some humble pie and basically surrender, this one is end up much worse than Vietnam, and the ramifications global.

What worries me the most is that I can’t imagine students and citizens going to protest en masse on the streets against the war. They’re too busy to complain on X and Tiktok to do anything about it.

tclancy9 days ago
> Also, the war cannot be won without boots on the ground

I think you missed the “pointless” part of the argument, such as it was.

Sabinus9 days ago
The Iran war has points, namely preventing a dedicated American enemy from getting nuclear weapons, contributing to Trump's legacy, and probably something to do with Israel. The problem is that it can't be won with current USA capabilities and everyone not in MAGA already knew this yet Trump started it anyway. The Ukrainians even offered drone defences before it started and were publically rebuffed by Trump. The ignorance and hubris of the Trump administration is truly remarkable.
marcosdumay9 days ago
> preventing a dedicated American enemy from getting nuclear weapons

By killing the anti-nuclear leadership of such country and proving their opponents points that only nukes could protect them from the USA...

emilsedgh9 days ago
> ... preventing a dedicated American enemy from getting nuclear weapons

It was called JCPOA but Israel didn't like it because it would've meant peace for the region. War _is_ the point for Israel at this point.

atoav9 days ago
Preventing a dedicated American enemy to get nukes, an enemy of which the American intelligence agencies said there is currently no sign they work to get nukes and with which you had deals to prevent them from doing so.

Sorry, but all you did was:

1. Showed them and the world that treaties with you are worth nothing

2. Showed them and the world, to gain the respect of the US, you need nukes. Decades of loyalty, treaties or good partner have been shown to be worth nothing, while being an authoritarian dictatorship and having nukes are respected.

3. Showed them and the world that having US bases on your soil is a liability and not a protection.

All in all if you were US president and your task was to destroy the US' standing in the world, there is not much more you could have done.

colechristensen9 days ago
We need to work on a common understanding of the word "pointless".
cryptoegorophy9 days ago
IIRC it was the people from Pakistan that did 9/11, now these people have nuclear weapons. Iranians didn’t do any 9/11 in USA but somehow they are not allowed nuclear weapons? How is this supposed to make sense?
maxdo9 days ago
Total starship mission including launches is 15 billion to date , and it’s on the verge of entering limited commercial service . Maybe without re use but as a much cheaper super heavy rocket , like 10x cheaper without re use already .

It make sense to a certain extent to focus on a capability researches vs largely throw away mission to deliver a few rocks for 20 billions.

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