SpaceNexus keeps the receipts on the space industry. Our own editions freeze on fixed dates, computed from our ledgers; outside events are listed with their source and the date we checked it. A launch date is only as firm as its source: “NET November” means no earlier than November, month only.
The 2026 Earth to Mars transfer window
Mars window explainer; Starship and Mars promise tracker.
Source: NASA Glenn Research Center (NASA/TM-2010-216764) (2010-10-01); checked 2026-09-26.
Slip Watch 2026-W46 (Nov 9 to Nov 15, 2026)
Frozen weekly edition: the week's real launch slips.
Slip Watch 2026-W47 (Nov 16 to Nov 22, 2026)
Frozen weekly edition: the week's real launch slips.
Slip Watch 2026-W48 (Nov 23 to Nov 29, 2026)
Frozen weekly edition: the week's real launch slips.
Launch Slip Index, November 2026
Frozen monthly edition.
Telesat Lightspeed: first two production satellites
Megaconstellation promise tracker update.
Source: Telesat (SEC 6-K) (2026-03-17); checked 2026-09-26.
Launch Slip Index, December 2026
Frozen monthly edition.
Vast Haven-1, the first commercial space station
Commercial stations promise tracker update.
Source: Aviation Week (2026-09-18); checked 2026-09-26.
The December 31 Cliff, 2026: final result
How many launches parked on Dec 31 actually flew.
On-Time Launch Report, Q4 2026
Frozen quarterly edition: punctuality by provider, vehicle and site.
Quarterly space funding edition, Q4 2026
Frozen quarterly funding edition with the reconciliation against other trackers (freezes automatically unless the editor publishes earlier).
Annual data edition computed from our ledgers.
Launch Slip Index, January 2027
Frozen monthly edition.
Launch Slip Index, February 2027
Frozen monthly edition.
Editions: Launch Ledger · funding · promise trackers · editorial standards.
Week in Space Data, every Friday.