May 30, 2025

This Week in Space 163: The Trials of Starship

59 minutes

This week we speak with Dr. Mike Wall, ace space reporter from Space.com, about Starship's recent test flight. What went right, what went wrong, and what are the prospects for Elon's mammoth rocket meeting NASA's goals for a moon landing in 2027? Also, Musk's recent video outlining future plans for Starship and a Martian metropolis, Chinese company Sepoch's recent (and very Starship-like) vertical launch and landing test, Japan's robotic lander, Resilience, about to attempt a lunar touchdown, and roadside assistance for the Psyche asteroid mission. See this and more on This Week in Space!

Headlines

New Dwarf Planet Discovery: Scientists at the Institute for Advanced Study in Princeton have identified a new dwarf planet with an orbit over 16 times the size of Earth's. Its closest approach to the Sun is 44.5 times Earth's orbit, similar to Pluto's orbit, placing it far out in the Oort cloud. While exciting, this object, named 2017 OF, is not Planet Nine because its mass doesn't align with the perturbations observed in other objects.

NASA's Psyche Mission Update: NASA's Psyche spacecraft experienced a fuel pressure glitch requiring a switch to a backup propellant line for its Hall effect thruster. Engineers successfully restored pressure, and the mission is still on track to arrive at the metallic asteroid Psyche in 2029. This mission is crucial as Psyche is believed to be the stripped-away core of an ancient proto-planet, offering insights into planet formation.

China's Reusable Rocket Advancements: Chinese rocket manufacturer Space Epoch successfully performed a vertical ascent and controlled vertical descent test of a booster stage, similar to SpaceX's Falcon 9 landings. The stainless steel rocket successfully soft-landed in the waters off Hainan Island, demonstrating advanced gimballing for stable landing.

Main Topic - Starship Flight 9 Test

Recap: SpaceX's Starship Test Flight 9 was deemed a partial success. The Super Heavy booster was reflown for the first time, demonstrating reusability and performing well despite an experimental hard ocean splashdown that resulted in an explosion six minutes into flight. The Ship upper stage reached space and the desired trajectory, an improvement over previous flights, but failed to deploy dummy Starlink satellites or perform an in-space relight due to an attitude control anomaly, possibly a fuel leak.

SpaceX's Ambitious Starship Plans: Elon Musk outlined plans for Starship Version 3, envisioned as the first fully mature version capable of Mars missions, rapid reuse, and in-orbit refueling. The long-term goal includes sending thousands of Starships and hundreds of people to Mars to establish a self-sustaining city.

Lunar Starship for Artemis Missions: There's ongoing discussion about the number of tanker flights required for a lunar mission, with estimates ranging from 8 to 12, even 16 flights. The timeline for Artemis III in 2027 is a concern, given the need for numerous refueling missions and the development of life support systems for crewed flights, which are currently absent in the Starship test vehicles.

Competition in Lunar Landers: While SpaceX is developing Lunar Starship, Blue Origin is also a strong contender with its Blue Moon lander, which is

China

These show notes have been truncated due to length. For the full show notes, visit https://twit.tv/shows/this-week-in-space/episodes/163

Hosts: Rod Pyle and Tariq Malik

Guest: Mike Wall

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