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Space digest — 2026-09-20

2026-09-20 Space

Top line: Starship's Flight 14 hardware reached the pad a week ahead of the official Sep 28 date with a wet dress rehearsal expected in between, LRO's survey returned the largest freshly formed crater ever found on (or off) the Moon, and China's "space computing" layer moved from slide decks to orbit on a CAS Space rideshare.

Flight 14 hardware stages at the pad — WDR expected this week (continuation — starship-cadence)

What happened: NSF (~2:15 PM ET): Booster 21 rolled out first, Ship 41 to follow — pointing to a potential wet dress rehearsal in the week before the current launch target. Sunday evening the hardware flowed: B21 disconnected from its lifter inside Mega Bay 1, emerged from the build site, and rolled toward Pad 2 (~6:30 PM ET onward, tracker RTs).

What's genuinely new: the first physical staging of F14 hardware since the official Sep 28 date was published — 8 days out, with a WDR now the expected gate between pad flow and flight. Pattern check: the date slipped 15→18→22→28 while the license mod stayed unconfirmed; pad-side readiness is no longer the constraint, and a clean WDR this week would put the paperwork as the only remaining variable.

Links: https://x.com/NASASpaceflight/status/2101736901497516360 · https://x.com/NASASpaceflight/status/2101799832323027112 · https://x.com/NASASpaceflight/status/2101828025520185612

LRO finds McGetchin: the largest newly formed crater ever observed — with a thermal mystery (new — one-off science)

What happened: NSF feature (~5:13 PM ET): LRO imagery revealed the largest newly formed crater ever found — named McGetchin (after lunar scientist Tom McGetchin) — measuring ~222 m (~728 ft) wide and ~43 m (~141 ft) deep; scientists estimate craters this size form about once a century. The same work flags an "interesting thermal emission phenomenon" at the site. Robert Wagner spotted it Oct 24, 2025 in Wide-Angle Camera difference imaging; the piece credits NASA Goddard/Intuitive Machines/Wagner.

What's genuinely new: fresh impact craters are usually meters across; a once-a-century-class 222 m crater caught by before/after imaging is the rare kind of find that calibrates impact-rate models — and it sat undiscovered-in-public for ~11 months after the Oct 2025 find (discovery-to-publication lag). The thermal observation is the open question worth following; LROC is imaging from 96.5 km, so resolution is unusually good for surface-change work.

Links: https://www.nasaspaceflight.com/2026/09/lro-mcgetchin-crater/

China launches its space-computing layer: Lijian-1 Y18 carries 9 satellites, two of them "AI computers" (continuation — orbital-data-centers; china-launch-tempo)

What happened: CAS Space's Lijian-1 Y18 launched 9 satellites Sep 20 from the Dongfeng Commercial Aerospace Innovation Test Zone — and multiple payloads are computing-first: Super AI Computing-1 (on-orbit AI data processing + target recognition) and Pengcheng First (PEGA-SUS1) — GalaxySpace + Peng Cheng Laboratory + SUSTech — China's first satellite combining a 5G NTN base station, onboard AI computing, and 100 Gbps laser downlink on one platform, pitched as 6G groundwork. Same report: CAS Space is scaling Lijian-1 production to 30 rockets/year and prepping a first sea launch off Guangdong.

What's genuinely new: the orbital-data-centers thread has so far been a US-side story (Musk's AI satellites, analysts' 2030s pushback, IM watching the market); this is the Chinese flank launching actual payloads — in-orbit AI processing and a 5G-NTN/laser/edge-compute stack on commercial rockets, plus a launcher expanding to 30/year with a sea-launch variant. The constellation-level ambition is now hardware in the manifest, not just filings.

Links: https://finance.biggo.com/news/d957f056-9590-4e33-826b-16f5260b982d

Yaogan-50 02 shed debris in July — and is still flying (new — space domain awareness)

What happened: Space Domain Awareness (substack, via Foust RT, ~9:25 PM ET Sep 20): China's active Yaogan-50 02 satellite experienced a debris event around Jul 20, 2026 — 43 debris objects cataloged — but the parent appears still maneuver-capable. The debris is high area-to-mass, so its orbital lifetime is shorter than first estimated.

What's genuinely new: an active, presumably operational Chinese satellite shed a debris cloud three months ago and the event is only surfacing now — a small-scale version of the active-satellite breakups that drive conjunction anxiety in mega-constellation traffic. Watch: whether Yaogan-50 02's mission continues normally, and whether any attribution (battery, propulsion, impact) is ever published — Chinese SDA disclosures are rare.

Links: https://x.com/jeff_foust/status/2101662127991718241

Also

Dropped