Space digest — 2026-09-07
Top line: A slow day with one anchor: Artemis hardware keeps flowing and the Artemis II trajectory fix is now confirmed in print, while Russia slips its next cargo resupply about a week on a booster-stage issue. The rest of the new feed is finance-blog commentary about space companies — noise, not news.
Artemis III stacking advances as Orion results confirm the Artemis II fix (continuation)
What happened: NSF published its Artemis-program roundup Sep 7, 2:39 PM ET: Artemis III SLS stacking advancing at Kennedy Space Center, and post-flight results confirming the Artemis II trajectory/heat-shield fix.
What's actually new: This is the piece formalized in the digest record today. The delta over Aug 31's "SLS picks up the pace": the mitigation is now validated, not just attempted — the steeper non-skip reentry profile cut Avcoat char-loss sites from 100+ on Artemis I to 9 (>90% reduction), and the reworked vent-capable Avcoat debuts on Artemis III next year (until then, Orion has no skip-entry capability). Parallel tracks continue: all four RS-25s installed on Core Stage-3, boosters 4-of-5 segments stacked, Artemis IV boattail delivered to KSC. Open question unchanged: the missing quick-disconnect plates on ML-1's Tail Service Mast Umbilicals — possible redesign or routine refurbishment, unconfirmed.
Links: - NSF: https://www.nasaspaceflight.com/2026/09/artemis-iii-sls-stacking-artemis-ii-orion-fix/ - NSF (X): https://x.com/NASASpaceflight/status/2097032465139236994
Russia: Progress MS33 deorbits; replacement MS35 slips ~a week (new, minor)
What happened: Progress MS33 undocked from the ISS Poisk module 11:16 AM ET Sep 7 and deorbited at 2:27 PM ET, burning up over the Pacific — routine cargo-cycle end. The actual news is upstream: the Progress MS35 launch on a Soyuz 2.1b — an unusual "b" modification for a Progress flight — is postponed about a week due to a third-stage issue, per industry sources (5:38 AM ET report).
What's actually new: The slip. Single-sourced (Katya Pavlushchenko, RT'd by Jeff Foust, "according to the sources") — treat as reported, not Roscosmos-confirmed. A one-week gap on an automated cargo run is minor; it only becomes a story if the third-stage issue touches the crewed Soyuz line.
Links: - Undock/deorbit: https://x.com/NASASpaceflight/status/2097001009100861762 - MS35 slip: https://x.com/jeff_foust/status/2096899523662528553
Starship Flight 14: week-of-Sept-15 window corroborated, still no official date (watch)
What happened: NSF's weekly launch preview (6:15 PM ET) counts five orbital launches this week and asks "perhaps Starship's first orbital mission next week?" Separately, Raptor 3 serial #236 sighted rolling at McGregor — engine production continues.
What's actually new: Nothing hard — this is third-party corroboration of the NET Sept 15 regulatory floor (FCC STA + FAA airspace advisories) already logged in the predictions ledger. The FAA vehicle-operator license modification remains the real gate; there is still no SpaceX-announced date.
Links: - NSF launch preview: https://www.nasaspaceflight.com/2026/09/launch-preview-090726/ - Preview (X): https://x.com/NASASpaceflight/status/2097091514480386268 - Raptor at McGregor: https://x.com/NASASpaceflight/status/2097001087840456987
Quick hit: RoboBall — the inflatable sphere for craters wheeled rovers can't survive
Texas A&M's RAD Lab published RoboBall III (IEEE Transactions on Field Robotics paper; writeups via IEEE Spectrum, ZME Science in our feed Sep 7): a ~6-ft, 330-lb inflatable ball driven by an internal pendulum — two actuators, sealed against lunar dust, inherently tip-proof — carried to a crater rim by a conventional rover, rolled down into permanently shadowed terrain like Shackleton (13 mi wide, ~2.4 mi deep), with samples launched back uphill in rocket-powered containers. Quarry trials demonstrated controlled descents, soft-terrain travel and a preliminary ballistic sample-return demo; it climbs ~20° slopes and has survived −299 °F, but is not PSR-qualified, needs space-rated electronics and more autonomy, and ~$250k has gone into it. What's new: first appearance on this beat — a physical-robotics answer to the mobility problem that kills conventional rovers in shadowed polar craters. Concept-stage research, nowhere near a mission.
Dropped, and why
- Finance-commentary trio (3 of 12 items, all search-sourced, with no publication date): Blockonomi's "SpaceX (SPCX) Stock Gains Momentum... Analysts Project 50% Growth" — we cannot corroborate a SpaceX public listing anywhere in 14 days of dense coverage; either a private-market vehicle or junk, either way unpublishable. Newscase's "Rocket Lab's Mixed Messages" asserts a NASA loss and Neutron schedule doubts with no underlying event anywhere in the feed. MSN's "Tesla vs SpaceX" AI-prize piece is syndicated opinion (same MSN quality problem as before).
- Launch-preview calendar filler (Soyuz/CZ-8A/two Falcon 9s) — routine; launches land in the feed as they happen.
- KSC 39A "vent show" tweet — unclustered, unexplained pad activity, no story.
- Stale-update: Flight 14 items ("SpaceX lines up Starship's 14th test flight," "Starbase This Week") — no delta over the Sep 6 digest's cadence coverage.