The tweet archive.

“@AmarSheth @agargmd @aginnt @LegendaryEnergy How is it considered probable if there’s no covid test? Is just a cough or high temperature enough?”

“@RenataKonkoly @Erdayastronaut @SpaceX It’s also because of the Spitfire engine & wizard”

“@Erdayastronaut @SpaceX Merlin is very simple compared to Raptor”

“Starship SN4 tank on test stand https://t.co/zN2OmMp1OS”

“@ravikumarpulapa @SpaceX Yes”

“In advance of this, please try to hack Starlink & Tesla Mothership!”

“There are now 420 operational Starlink satellites 🛰 😉”

“@TesLatino @flcnhvy @anime_virus @thirdrowtesla @MFrunker @SpaceX It’s made of a special dark foam that’s extremely radio transparent, so as not to affect the phased array antennas. Looks a lot like a car sun visor.”

“@PPathole @AnnieW Am in Boca working on the rocket with an awesome team, so pretty great :)”

“@archillect Red sky of Mars is Blue at dawn & dusk”

“@alvianchoiri @Erdayastronaut @BocaChicaGal @NASASpaceflight @SpaceX Pretty much”

“@Erdayastronaut @BocaChicaGal @NASASpaceflight @SpaceX Mechanically attached to steel studs. Insulation is certainly the intention!”

“@Erdayastronaut @teslaownersSV @NASA SpaceX has a lot of experience berthing & now docking with @Space_Station, which is very difficult. Orbital refilling should in theory be easier, since Starships dock with themselves & will be uncrewed at first.”

“@teslaownersSV @Erdayastronaut Fully reusable orbital rocket, then orbital refilling, then Mars”

“@Peter_J_Beck @thesheetztweetz @ulalaunch @torybruno @SpaceX 10% would be impressive. Anything below a 20% payload hit would be outstanding.”

“@InSpaceXItrust @jgrano305 Maybe 1.5% change to interior dimensions. Still very roomy.”

“@Erdayastronaut @dwesterster Trying have fewer parts, so strakes are unlikely. Some very counterintuitive CFD results in both hypersonic & subsonic regimes. Starship does controlled falling more than flying.”

“@Teslarati Pretty much, although we also sent some Medtronic units, which are meant for extreme situations. Those require a lot of work to set up & operate. Should be used sparingly. SpaceX is making the valve at the heart of that system.”

“@Erdayastronaut @BnOrdhaug @sivanithu @tobyliiiiiiiiii @cabral_psyd @imatsb @thesheetztweetz @SciGuySpace @Some1gee @RocketLab @Peter_J_Beck Sure”

“@Erdayastronaut @sivanithu @tobyliiiiiiiiii @cabral_psyd @imatsb @thesheetztweetz @SciGuySpace @Some1gee @RocketLab @Peter_J_Beck Production is by *far* the hard part. That’s why I’m not super worried about early Starship failures. Initial serial numbers are suboptimal, so would be lawn ornaments if they survived. That said, as lawn ornaments go, they’re pretty sweet …”

“@nextspaceflight @Erdayastronaut @sivanithu @tobyliiiiiiiiii @cabral_psyd @imatsb @thesheetztweetz @SciGuySpace @Some1gee @RocketLab @Peter_J_Beck SN4 won’t get flaps, so can only do flights with engine on. Just did a reset this week on flap, actuator & static aero design. Either SN5 or SN6 will get flaps.”

“@KeithMansfield @Erdayastronaut @sivanithu @tobyliiiiiiiiii @cabral_psyd @imatsb @thesheetztweetz @SciGuySpace @Some1gee @RocketLab @Peter_J_Beck That’s for sure! 😅”

“@Erdayastronaut @sivanithu @tobyliiiiiiiiii @cabral_psyd @imatsb @thesheetztweetz @SciGuySpace @Some1gee @RocketLab @Peter_J_Beck I have great respect for anyone who gets a rocket to orbit! It’s very hard. I’m spending crazy hours on Starship design/production. It is truly an honor to work with such great engineers. SN4 is almost done 😀”

“@sivanithu @tobyliiiiiiiiii @cabral_psyd @Erdayastronaut @imatsb @thesheetztweetz @SciGuySpace @Some1gee @RocketLab Some of the small launcher activity is cool, especially @rocketlab. Downsides are helicopter retrieval doesn’t scale to bigger rockets & is highly weather-dependent. Also, propulsive landing is needed for moon/Mars. That said, it’s probably right move for small LEO vehicle.”

“@Erdayastronaut @thesheetztweetz @SciGuySpace @Some1gee Sorry, meant to say only US rocket. Atlas V is close, but not yet 100%.”

“@thesheetztweetz @SciGuySpace @Some1gee Last I checked, over a million dollars less. Moreover, F9 is launching far more often & is only rocket fully NASA-approved for launching astronauts, so that gap is increasing.”

“@SciGuySpace @Some1gee Also, it costs less $ to insure a Falcon 9 mission. That’s the acid test.”

“@katlinegrey @Zvezdichko @SciGuySpace @Rogozin In the future, it will be as strange to have expendable rockets as it would be to have expendable airplanes today. All will be reusable.”

“@Darkellysio @katlinegrey @Zvezdichko @SciGuySpace The swivel wing design was cool. This seems like a good idea: https://t.co/Aq81q9oMdq https://en.m.wikipedia.org/wiki/Baikal_(rocket_booster)”

“@katlinegrey @Zvezdichko @SciGuySpace Strange, as SpaceX lands on land frequently. Russia has very talented engineers, but they must be given reusability as goal or success is impossible.”

“@SciGuySpace SpaceX rockets are 80% reusable, theirs are 0%. This is the actual problem.”

“@Erdayastronaut @SpaceX Aim for zero velocity just above surface & fall. You won’t fall fast.”

“The 20th & final Dragon 1 mission is complete”

“Starship fuel header tank https://t.co/CVj8057CY6”

“@Erdayastronaut @PPathole @austinbarnard45 @LabPadre Exactly. No point in an abort system on Mars, so got to make the core ship super safe.”

“@Erdayastronaut @PPathole @austinbarnard45 @LabPadre Rockets & spacecraft have to operate in vacuum, so maintaining pressure is fundamental. However, this can be made very safe over time imo.”

“@Erdayastronaut @PPathole @austinbarnard45 @LabPadre There are redundant pressure control valves. It’s a new system and SN3 was simply commanded wrong. Rockets are hard.”

“@Erdayastronaut @PPathole @austinbarnard45 @LabPadre If you lose pressure control on rocket propellant tanks, you’re doomed anyway, so might as well go all in”

“@teslaownersSV @28delayslater @thirdrowtesla Bought, but SpaceX is spooling up to manufacture proportional solenoid valves for Medtronic (confirmed as critical today with chair & CEO) https://t.co/zIuesSaXrZ”

“@spaceXcentric @LabPadre Some valves leaked at cryo temp. Fixing & will retest soon.”

“@NuovaRealta @cleantechnica Will call when we reach Mars”

“@Erdayastronaut @SpaceX @flightclubio Mass of initial SN ships will be a little high & Isp a little low, but, over time, it will be ~150t to LEO fully reusable”

“@MarsMeditation @RationalEtienne @PPathole The S-curve appears to be entering the logarithmic phase”

“@C3LT_Games Hopefully, Starship will have enough flight history to substitute for Dragon for NASA missions too”

“@InSpaceXItrust @Kristennetten @thirdrowtesla Could maybe tap the condensation for water too. Seems odd that HVAC systems make pure, fresh water & just dump it on the ground.”

“@RenataKonkoly @moskov Yeah, SpaceX is working on ventilators too”

“@M_Mosseri @SpaceX @NASA @NASA_Astronauts Yes”

“@Erdayastronaut @SciGuySpace Last launch aborted due to slightly high power. Possibly, but not obviously, related to today. This vehicle has seen a lot of wear, so today isn’t a big surprise. Life leader rockets are used only for internal missions. Won’t risk non-SpaceX satellites.”

“@KMastersBarnes @SpaceX Yeah, most reflights ever!”

“@Erdayastronaut @SpaceX @BoeingSpace @ulalaunch @Boeing Slight booster length increase to 70m, so 120m for whole system. Liftoff mass ~5000 mT.”