Zachary Sellinger

@HotTakeCity904 Option B.

Which one is it??

Height of 13.1 meters, external diameter of 5.2 meters, usable volume of 145 cubic meters. Other fairings are slightly wider and taller with more usable volume. I get that customers choose Falcon 9 because of its low cost (and reusability), but they need to take into consideration the fairing’s usable volume; especially if it’s a big cluster of satellites to LEO, or a heavy high-power communications satellite to GTO.

@GewoonLukas_ @RoryTheSpaceGuy This. It's a size issue, not weight. Remember that Falcon 9 has the smallest fairing of all these rockets.

Notice how they gave less satellites to Falcon 9 even though it has a higher capacity than Atlas V?

Following the historic Conestoga 1 launch in September 1982, it was more than a decade later that the Conestoga rocket underwent a revamp to make it a modular-type rocket with different upper stage types & strap-on boosters arrangements. Only one model of this new Conestoga rocket family was launched in October 1995: the Conestoga 1620. It was to have carried the COMET recoverable experimental satellite to a Low Earth Orbit, but it failed 46 seconds into flight.

@eccorca I love underrated rockets so I like conestoga

he got back to me, and in the email he casually dropped that the first stage used for Conestoga 1 had already flown thrice, and he gave me a new, decently niche Percheron photo

I landed safely.

@Dominos_UK They forgot pepperoni.

tell a sad story in 3 words

@Matt_Pinner Captain Universe.

Name a famous captain

@elonmusk You’re posting this to give a hint about Starship Flight 12’s target launch date, are you?

@AstroSardine @ScottLikedSLS SpaceX actually planned on a lunar version of Crew Dragon about a decade ago, but the problem was designing a new heat shield that would withstand the increased reentry heating from a trans-Earth injection, rather than simply coming out of Low Earth Orbit.

@ScottLikedSLS At that point SLS is completely unnecessary and a massive waste bc surely a new Glenn could put Orion into Leo for a fraction of the price or just lunar rate crew dragon

This would be for Artemis VI+ which was already known. and also this is not "planning" this is simply a proposal as of now.

@JonTheBeagleDad @julia_bergeron Playalinda Beach is less than two miles from Pad 39B. Bad idea to watch from there, unless you want to be deaf.

@julia_bergeron but you dont say why ?

Note to visitors ahead of the Artemis II launch- Visiting Playalinda Beach and the surrounding refuge is always a good choice during your stay. However, you will not be able to stop at the vistas or beach lots 1-3 while SLS is on the pad. Starting March 20th hours are 8am-5pm.

@ASE_Astronauts @astro_matthias @SpaceX @Space_Station Happy b-day, @astro_matthias.

#HappyBirthday to ASE member @astro_matthias, who first flew to space in 2021 aboard @SpaceX Crew-3 as part of an expedition to the @Space_Station (Expedition 66/67)!

@slvulture I am.

Who else is excited about Artemis II? 🙋‍♂️👀

@RealJamesWoods @elonmusk Why would he be? What’s the point?

Why isn’t @elonmusk also in charge of NASA?

@GamewithDave The N64.

Which night are you picking?

@OfficialMoonDAO You can try, but I doubt they’ll say yes.

@ZachSellinger should we send some of them to space?

What's going to happen to these people when Artemis II launches? One thing's for certain: We need to send many, many more people to space to experience the Overview Effect.

@Kekius_Sage Then what emoji should we use instead?

Gen Z wants people to stop using the thumbs up emoji saying it’s ‘rude’

@TaylorHose Are you referring to the Epcot ride?

As the commander of Mission Space, I can assure my crew successfully completed their mission.

@mrwtffacts Lesson learned: NEVER accept any dare of any kind. Just say no, like you say no to drugs.

In 2010, 19-year-old Australian rugby star Sam Ballard was dared to eat a garden slug at a party. The slug carried a parasite, which infected his brain, put him in a coma for over a year, paralysed him from the neck down and tragically killed him 8 years later at age 28.

Jarvis’ first flight assignment was STS-51-D as the second payload specialist, Charlie Walker of McDonnell Douglas being PS1. When STS-51-E, a planned TDRS satellite deployment mission, was cancelled; Karol Bobko and four of his fellow crewmates transferred to STS-51-D, while Jake Garn replaced Greg Jarvis. Why? Because there was demand to fly an American politician to space. The same thing applied to STS-61-C, which was Jarvis’ first reassignment. Again, Jarvis was replaced by Congressman Bill Nelson as the second payload specialist, leading up to Jarvis being assigned to STS-51-L. And you know what happened next.

Astronaut Gregory Jarvis, who died in the Challenger disaster, wasn't originally supposed to fly on that mission. He was replaced on both of his previously planned flights by congressmen wanting to go to space, until he ended up on the fateful STS-51L mission.

@Rainmaker1973 This is no April Fool’s joke. I swear.

New launch date set for NASA's delayed Moon mission. Following extensive repairs and a comprehensive Flight Readiness Review, NASA has established April 1, 2026, at 6:24 p.m. ET as the target launch date for Artemis II, the program's inaugural crewed flight. Success on this schedule would mark the first human journey around the Moon in over half a century, surpassing the Apollo era's last lunar voyage in 1972. The decision came after NASA's rigorous assessment confirmed the Space Launch System (SLS) rocket and Orion spacecraft are prepared for flight. Earlier this year, technical setbacks—including a fuel leak identified during a February 3 rehearsal and a helium flow interruption to the upper stage on February 21—prompted a rollback from Launch Pad 39B to Kennedy Space Center's Vehicle Assembly Building for fixes. Repairs progressed smoothly, enabling NASA to plan a vehicle rollout to the pad as early as March 19 (with some reports indicating March 20), setting the stage for the April window. Backup opportunities exist through early April (April 2–6) and potentially April 30, depending on orbital alignments and conditions. Artemis II will send four astronauts—NASA's Reid Wiseman (commander), Victor Glover (pilot), Christina Koch (mission specialist), and CSA's Jeremy Hansen (mission specialist)—on a roughly 10-day voyage. The crew will travel more than 600,000 miles (965,000 km), execute a lunar flyby using a free-return trajectory, and test Orion's deep-space systems in preparation for future landings. This milestone mission represents humanity's return to cislunar space after decades of low Earth orbit focus, paving the way for sustainable lunar exploration under the Artemis program. [“Artemis II Mission Overview.” NASA, 2026]