The tweet archive.

“RT @SpaceDavenport: Starship will be able to do both the Moon and Mars. The destination, as I wrote in Rocket Dreams, doesn't matter as muc…”

“@Malcolmmarsman @bluemoondance74 @SptlightVids @SpaceX Ok, thanks”

“@Erdayastronaut @Malcolmmarsman @flcnhvy @marstronauts @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX Horizontally”

“@newscientist Moon base alpha (cheesy show, but I loved it) plus Mars”

“@AngelNDevil2 @MarkChica @FutureJurvetson @bluemoondance74 @SpaceX Raptor cost is tracking to well under $1M for V1.0. Goal is <$250k for V2.0 is a 250 ton thrust-optimized engine, ie <$1000/ton”

“@HarryStoltz1 @neiltyson @Space_Station Big challenge for Starship refueling on the moon is finding sources of carbon. Probably some pretty big deposits in craters from meteorites. Same goes for hydrogen & oxygen, also in (shadowed) craters.”

“@JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX 3 sea level optimized Raptors, 3 vacuum optimized Raptors (big nozzle)”

“@PPathole @Erdayastronaut @dauqhx @universal_sci Mars is easier than the moon for propellant production. Could get going with only one ship, where the ship itself is the propellant plant. Needs to make ~2 tons/day.”

“RT @SecDuffyNASA: The 400th episode of Houston We Have a Podcast is out TODAY! We talk about our missions to the Moon and Mars in order to…”

“@Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX Yeah. Outer engines with much larger nozzles are fixed to airframe, inner engines have high gimbal range ~15 degrees”

“@AzeAlter Competition is better And stopping at the Moon simply slows down getting to Mars”

“@dmk184 @NASA @SpaceX @Space_Station @Commercial_Crew Pretty much any moon or planet that has a solid or liquid surface”

“@bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX About to complete SN5, ramping to an engine every 3 days this summer”

“@bluemoondance74 @Erdayastronaut @SpaceX Just spoke with FAA, so hopefully yes”

“@AngelNDevil2 @MarkChica @FutureJurvetson @bluemoondance74 @SpaceX It’s all the “secondary” structure that concerns me, not engines & primary airframe”

“@bluemoondance74 @flcnhvy @SpaceX Should be able to post video of Raptor on Tripod soon”

“@Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX Outer engines are attached to the edge of the airframe to give the center engines room to move”

“@ludan27 @Erdayastronaut @JeromeJaccard @Robotbeat @alan1bernard Yes, but single stage to orbit with no payload is pointless. Add Super Heavy rocket booster & orbital payload is gigantic. Only need booster on Earth, due to deep gravity well & thick atmosphere. Starship alone on moons & Mars.”

“RT @beffjezos: Starbase, Moon is gonna be such a dope place to visit. SpaceX getting into electromagnetic mass drivers using Tesla tech is…”

“@SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX Mk1 & Mk2 ships at Boca & Cape will fly with at least 3 engines, maybe all 6”

“@curiousmind44 @SPEXcast @13ericralph31 @JaneidyEve @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX @JeffBezos Makes no sense. In order to grow the colony, you’d have to transport vast amounts of mass from planets/moons/asteroids. Would be like trying to build the USA in the middle of the Atlantic Ocean!”

“@bluemoondance74 @SptlightVids @SpaceX :(”

“@OranMaliphant @Erdayastronaut @AngelNDevil2 @MarkChica @FutureJurvetson @bluemoondance74 @SpaceX That’s about right, except no sensors. Tile itself is the sensor as it will partially ablate where too hot & have to be replaced.”

“RT @MarsUniversityX: Elon Musk: “You could scale up to 100 terawatts of AI compute per year from the moon” https://t.co/e2tCM3i35R”

“@bluemoondance74 @flcnhvy SpaceX engine production is gearing up to build about a Raptor a day by next year, so up to 365 engines per year. Most will be the (as high as) 300 ton thrust (but no throttle & no gimbal) variant for Super Heavy. Cumulative thrust/year could thus be as high as 100,000 tons/year.”

“@bluemoondance74 @Erdayastronaut @justpaulinelol @mayemusk @SpaceX Overall successful. Aborted at T+51 sec on high mixture ratio, but we were intentionally probing the corners of the box of operating conditions, so not surprising.”

“@Malcolmmarsman @flcnhvy @marstronauts @Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX 3 months”

“@Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX ~2.8m”

“@annerajb @highlyaaronic Orbital refilling is critical for high payload to moon or Mars. Initially just Starship to Starship, later dedicated tankers.”

“@bluemoondance74 @mycroft16 @LabPadre @SpaceX Hopefully so”

“@EcoHeliGuy @Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX Yes, will be used for rear cargo storage. Also helps manage center of mass for heavy payloads when forward cargo is full.”

“@flcnhvy @marstronauts @Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX Hopefully, 4 months”

“@marstronauts @Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX Vacuum nozzle engines are only used in (near) vacuum conditions. Sea level engines need to gimbal rapidly & at high angle for landing. Larger nozzle leaves less room to move & increases moment of inertia.”

“@flcnhvy @Malcolmmarsman @marstronauts @Erdayastronaut @JaneidyEve @13ericralph31 @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @SpaceX First flights would have fewer, so as to risk less loss of hardware. Probably around 20.”

“@benoitdenayer @navincho @katlinegrey Essentially, yes. Great engineering talent, but should focus on reusable rockets for purpose of a permanent human base on the moon and self-sustaining city on Mars.”

“@Debapratim15 @curiousmind44 @SPEXcast @13ericralph31 @JaneidyEve @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX @JeffBezos Yes”

“@_ishanspatil @SPEXcast @13ericralph31 @JaneidyEve @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX Aiming for 150 tons useful load in fully reusable configuration, but should be at least 100 tons, allowing for mass growth”

“@13ericralph31 @JaneidyEve @SPEXcast @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX Aspirationally”

“RT @ApoStructura: A 2016 SpaceX rendering of ITS (now Starship) sailing through the moon belts of Saturn: Goes to show how consistent Spac…”

“@SPEXcast @13ericralph31 @JaneidyEve @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX Hoping for 380 sec Isp, but at least 370. Otherwise similar to sea level version.”

“@SPEXcast @13ericralph31 @JaneidyEve @bluemoondance74 @Orion_Sword @Some1gee @Erdayastronaut @SpaceX N2 for vacuum. Aero surfaces & high gimbal angle main engines for atmosphere.”

“This piece about Mars in the NYT is worth a read http://t.co/mNB6f1aS http://www.nytimes.com/2012/08/28/opinion/the-man-in-the-moon.html?_r=2&emc=eta1”

“The sheer size of Falcon Heavy is mind-blowing. It could literally send a fully loaded London bus to the moon.”

“@bdcs Yup, it is super far. Moon is basically in our back yard relative to Mars.”

“The tower has caught the rocket!! https://t.co/CPXsHJBdUh”

“Starship rocket booster caught by tower https://t.co/aOQmSkt6YE”

“Great energy from @SpaceX fans in Mexico https://t.co/R695MUaicc”

“Falcon going to orbit as seen from ocean https://t.co/Dclhju24ya”

“But then I started thinking about Mars”

“Great video of Starship Super Heavy Booster landing as seen from Mexico! 🇲🇽 https://t.co/R695MUaicc”