5/20/2026 at 10:48:51 PM
There is a lot riding on V3. SpaceX cannot afford to take too many launches to get V3 solid. If 2026 is another 2025 (3 V2 failures in a row followed by 2 V3 successes), then they can forget about landing on the moon before 2030.My hope is that Flight 12 goes nearly flawlessly (at least gets to soft splashdown) and they can start testing in-space refueling in July/August.
If they can demonstrate in-space refueling by the end of 2026, then they have a shot at a lunar-landing demo in 2027 and a crewed-landing in 2028. But a lot has to go right for that to happen. Here's hoping it does.
by GMoromisato
5/20/2026 at 11:09:55 PM
> then they can forget about landing on the moon before 2030.A crewed Moon landing before 30 is really implausible. Everyone is late, but the latest NASA OIG report put the Axiom suits very late (somewhere ~2031 if everything holds, but it notes it might not hold).
by NitpickLawyer
5/21/2026 at 12:39:07 AM
Were any of them actually failures? My understanding is they push limits and create intentional weak points to see where it fails, and something failing isn't a mission failure but rather part of the research process.by brynnbee
5/21/2026 at 1:02:05 AM
The goals of the V2 flights were to test the improved heat shield and to test satellite deployment. The first three V2 flights did not make it far enough to test either of those goals. It wasn't until Flight 10 that they could actually test that, and that was 9 months later.Effectively, SpaceX lost 9 months due to problems with V2.
Sure, one could argue that it's still research (no customer was affected), and there was no way to know V2 would fail until it was tested.
But watching the stream, it was clear that the SpaceX team was very disappointed with the outcome. I remember watching Flight 1, which nearly destroyed the launch pad and didn't make it to SECO, but still SpaceX was ecstatic with the results.
2025 was supposed to be the year SpaceX tested in-space refueling. The V2 failures delayed that, and whether or not a different company could have done better (my guess is no), SpaceX still felt like they failed.
by GMoromisato
5/21/2026 at 5:11:30 AM
Your standards of success are unrealistic and don't reflect the history of spaceflight. Designing and building rockets is incredibly difficult and has always been marred by a high failure rate. The early years of the US space program had an abysmal mission failure rate. Vanguard (1957-1959) was a disaster with 9 failures out of 12 attempts. A 25% success rate. Ranger (1961–1965) had 6 failures in a row out of 9 missions. By Apollo the US cleaned up its act, but had multiple high-profile failures (Apollo 1, 6, and 13).The Soviets were not better, the Luna program failed 11 missions in a row out of 12 missions. The N1 rocket went 0 for 4 and its failure ended the Soviet lunar program.
SpaceX Falcon 1 failed three of its first five launches, which nearly bankrupt the company. The rocket's successor, the Falcon 9, ended up becoming the most reliable rocket ever produced.
The fact that Starship even functions with so few test flights is an engineering marvel.
by tristanj
5/21/2026 at 5:22:32 PM
Absolutely--space is hard, and Starship is the most ambitious rocket ever, and SpaceX is, pretty obviously, the most talented and capable space company today (and maybe ever). I'm not arguing anything different.I'm just saying that SpaceX themselves expected V2 to work better than it did. I don't think they would disagree that the first three launches of V2 were failures relative to their expectations.
But none of that contradicts your point that, even with failures, Starship is an engineering marvel. I do agree with you on that.
by GMoromisato
5/20/2026 at 11:22:34 PM
Small edit, 2 V2 (not V3) successes (flights 10 and 11).by russdill
5/21/2026 at 1:04:11 AM
Thank you! [Wish I could edit, but for some reason I can't, or I can't see the link to edit.]by GMoromisato
5/21/2026 at 2:11:20 AM
HN only allows editing for a fairly short period after a comment is posted.by mrec
5/20/2026 at 11:52:33 PM
I am pretty sure that at least some SpaceX engineers are reading HackerNews.But I don't think I ever seen any insiders comments here, even anonymously.
by stephc_int13
5/21/2026 at 12:33:39 AM
I assume they'd be covered by a ludicrous NDA.by helterskelter
5/21/2026 at 1:55:34 PM
Assumption not required. US ITAR regulations mean you're federally "encouraged" to be tight lipped. Add in the fact SpaceX is ahead of pretty much everyone else...by chainingsolid
5/21/2026 at 2:24:27 AM
>SpaceX cannot afford to take too many launches to get V3 solid.Why do you say that? I'm sure they'd love to have everything go right, but I doubt they're going to go out of business if it doesn't.
by laughing_man
5/21/2026 at 3:24:50 AM
That's a fair point. I'm just projecting my own hopes. If it takes them too long to get V3 reliable they will not be able to land on the moon by 2028. I don't think SpaceX wants to feel responsible for China beating the US to the moon.by GMoromisato
5/21/2026 at 1:20:30 AM
It has a new engine design. If it can make it only a minute into launch, it'll provide a lot of useful data.by dlcarrier
5/20/2026 at 10:54:51 PM
question: what will happen if orbit refuelling goes wrong? Won't it destroy everything in orbit?by john_minsk
5/21/2026 at 12:02:38 AM
All Starship test launches are suborbital so if anything goes wrong, the ship and debris fall back to Earth.Even if it was put in orbit, debris are not an issue because orbital decay at Low Earth Orbit (LEO) is significant. A satellite orbiting below 250km will fall back to earth within a few hours, and at 400km within a year. LEO below 500-600km has enough atmospheric drag to be self-cleaning.
Orbital debris are more significant issue at higher orbits 800km and above.
by tristanj
5/20/2026 at 10:56:44 PM
> what will happen if orbit refuelling goes wrong? Won't it destroy everything in orbit?No. What is the mechanism through which you suspected this could happen?
by JumpCrisscross
5/20/2026 at 10:58:52 PM
Kessler syndrome presumably?by bragr
5/20/2026 at 11:33:26 PM
Keeping the orbits low enough, and/or intentionally going suborbital after docking/before starting the fuel transfer, will make the chances of that being possible very low.It's also worth considering that they have demonstrated cryo propellant pumping between two tanks within a ship, so, AFAIK, transfer between two ships is more about testing the docking systems, than it is about the pumps. They could probably rig the system to first pump some inert gas to verify the quality of the docking, then try to pump propellants.
by hgoel
5/20/2026 at 11:35:16 PM
...caused by what?by margalabargala
5/21/2026 at 2:44:24 AM
Colliding tanks full of oxidizer and fuel?by hilsdev
5/21/2026 at 2:51:23 AM
No, for the same reason that the explosion won't destroy the earth either.by margalabargala
5/20/2026 at 11:28:36 PM
Presumably the effect of any explosion would decrease proportional to the volume as it expands. Is there much volume in space?by Lerc
5/21/2026 at 8:25:44 PM
the clue is in the nameby librasteve
5/20/2026 at 11:01:32 PM
Liquid handling in microgravity has always been weird. Big gas bubbles in the fluid, surface tension effects causing liquid to float in balls in the ullage, stuff like that. Turbopumps break if they ingest a larger bubble.There could be some odd failure modes I would think. Failure to pump the liquid, broken pumps, who really knows? My guess would be that a failure mode would be a big spill, a failure to pump, only partially refilling, or broken turbopumps before an explosion.
by bediger4000
5/20/2026 at 11:55:00 PM
For something like a transfer between Starships you can resolve a lot of those problems by (very) gently spinning the 2 craft. It won't take much force for the liquids to settle at the bottom of their respective tanks where you would presumably put the intakes.by MadnessASAP
5/20/2026 at 11:30:25 PM
A probably very naive question: why not pistons?by pmontra
5/20/2026 at 11:47:14 PM
Because there’s a much, much simpler and easier way:1. Connect the two ships
2. Connect the liquid valves from both cryo tanks together.
3. Spin the ships about the short axis
4. Open the vent valve for the cryo tank to receive liquid.
5. Lock closed the vent valve for the cryo tank to supple liquid.
Steps 2, 4 and 5 are how you normally transfer cryo fluids between dewars on earth. You just to create pseudo gravity / acceleration in the body frame of the ships to make it work in space.
by labcomputer
5/21/2026 at 1:36:12 AM
NASA has used tanks with a bladder. Pressurizing gas on one side of the bladder, all fluid inside. Cold liquids (methane in SoaceX case) means materials are crucial. A big piston is heavy and could jam.by bediger4000
5/20/2026 at 11:23:26 PM
Seems like you could use peristaltic pumpsby idiotsecant
5/20/2026 at 11:27:01 PM
That would take ages!by pants2
5/21/2026 at 1:39:27 AM
Why?by idiotsecant
5/21/2026 at 3:03:25 AM
There's not going to be a moon landing any time soon, regardless. Nobody knows how to do in-space refueling; it's a research project. And they're damn well not going to do it a dozen times in the next year.Furthermore they don't have a lander. Landing on the moon is hard. So hard that almost everybody who tries it fails, especially if the lander is top-heavy. And the SpaceX lander idea is very top-heavy.
Finally, the NASA budget has been hollowed out. Even if the two big show stoppers above were easy, the lack of money would stop the project.
by dreamcompiler
5/21/2026 at 4:41:20 AM
I suspect Space X has a pretty strong inkling about how to do in-space refueling. They know how to dock in orbit, they have conducted internal propellant transfer tests, they know how to offload payload from ship in orbit and keep control of it, they know how to make autonomous quick connect/disconnect couplings for propellant transfer.They haven't strung everything together yet and it's clearly much more complex than that. Still, pieces are coming together. Why couldn't they do it a dozen times in the next year? They could have an orbital ship launched in Q3 (flight 14), test a tanker and refueling in Q4, and start fueling in the next 3 months.
That implies all the test flights go well which is a pretty long shot, but not out of the realm of possibility. Although I think it will ship reuse that will be the problem keeping them from that within a year, rather than in-orbit refueling which I suspect won't take them more than a couple of tries to get right. Reentry still looks like a beast of a problem. It's one thing to have enough of your vehicle hanging together to land it, quite another thing again to have it back in a condition you'd be able to start fueling it up again ready for the next launch and reentry to do it all again, even in days or weeks instead of hours like Space X are aiming for.
by stinkbeetle
5/21/2026 at 10:43:51 AM
My theory for why they have been failing so much recently..2018.. Young brilliant engineer starts working for spaceX, absolutely the most exciting space company, on an awesome new rocket that will finally be a better launch vehicle than Saturn 5 and be able to enable all sorts of cool space stuff. Just a naive young nerd, dont really know anything about Elon, not into social media.
2024.. The Elon stuff in the media is unavoidable and obvious, they guy is a freaking nazi, suporting trump, supporting right wing parties in EU.. The talented engineer either leaves or stops giving a shit and quiet quits.
This process times several 100, in an experimental rocket design project, where any tiny flaw can make the whole thing fail. ---
by everyone
5/20/2026 at 10:53:04 PM
[flagged]by everyone
5/20/2026 at 10:58:20 PM
Have you met hardware guys? This is not how they operate, in my experience.by rpmisms
5/20/2026 at 11:03:21 PM
I mean I might be a hardware guy myself depending on your definition. I've never dealt with rocket engineers.. Are they "hardware guys" according to you? If so it seems you are using that term incredibly broadly.by everyone
5/20/2026 at 11:09:35 PM
Are you trying to say that "hardware guys" don't care if they're working to advance the agenda from a Nazi?by malfist
5/20/2026 at 11:38:10 PM
Historically, that has been true about rockets.by rpmisms
5/21/2026 at 9:27:50 AM
But SpaceX went out of their way to define themselves against the old school defence-focussed companies.So some rocket engineers might very well have made a positive choice to "work at SpaceX to get humans to Mars" rather than to "work at Lockheed to build missiles".
Anyone in that group is likely feeling rather disillusioned right now, which will inevitably lead into demotivation.
by roryirvine
5/20/2026 at 11:17:27 PM
I mean, rocket guys have a long history of not minding advancing the agenda of a Nazi.by saalweachter
5/20/2026 at 11:02:22 PM
[flagged]by Recurecur
5/20/2026 at 11:16:59 PM
[flagged]by deanCommie
5/20/2026 at 11:30:38 PM
[flagged]by hcurtiss
5/20/2026 at 11:04:14 PM
[flagged]by everyone
5/20/2026 at 11:09:31 PM
[flagged]by dbeardsl
5/20/2026 at 11:08:13 PM
That's makes a lot of sense becuase the Nazi's were notorius for not having good rocket engineersby wonderwonder
5/20/2026 at 11:15:08 PM
[flagged]by deanCommie