Mars & Starship · Finding · as of 19 Oct 2026, updated 21 Oct 2026
Starship to Mars in 2026: then vs now
Proposition (held fixed): When will the first uncrewed Starship(s) launch from Earth toward Mars? Same vehicle, no people (Optimus, if aboard, is still uncrewed of humans), same destination, same Earth–Mars transfer window. Not mixed with crewed landing dates, a self-sustaining city, Dragon/Red Dragon or lunar flights.
The 2026 window went from “default plan” to “low probability shot.”
“So we'd have to launch in November or December of next year. So the, the default plan is to launch hopefully several starships to Mars at the end of next year.”
“We could, but uh it would be a low probability shot um and somewhat of a distraction. So um 29 then it's not out of the question.”
6 Aug 2025 X: “Slight chance of Starship flight to Mars crewed by Optimus in Nov/Dec next year. A lot needs to go right for that. More likely, first flight without humans in ~3.5 years, next flight ~5.5 years with humans.” 1953028261044187204
ElonsFAQ corpus · verified 2026-10-19 · unofficial archive.
Then
28 February 2025 (publication; recording likely 27 Feb 2025). Joe Rogan asked whether the next step was “an unmanned voyage to Mars.” Musk:
“the next orbital synchronization is November of next year so and you can launch plus minus a month roughly”
“we'd have to launch in November or December of next year and so the the default plan is to launch hopefully several Starships to Mars at the end of next year”
Editorial calendar reading: from Feb 2025, “November or December of next year” = November–December 2026.
Same window, stated before and after:
“The first Starships to Mars will launch in 2 years when the next Earth-Mars transfer window opens. These will be uncrewed to test the reliability of landing intact on Mars. If those landings go well, then the first crewed flights to Mars will be in 4 years.”
“SpaceX plans to launch about five uncrewed Starships to Mars in two years.”
“just over two years, we'll be sending our first uncrewed starships to Mars”
“Starship departs for Mars at the end of next year, carrying Optimus. If those landings go well, then human landings may start as soon as 2029, although 2031 is more likely.”
Midpoint
29 May 2025, SpaceX Starship Update at Starbase:
“the next Mars opportunity is at the end of next year in about 18 months. So November, December is the next Mars opportunity.”
“I think we'll probably have a 50/50 chance right now because we've got to uh we've got to figure out orbital refilling uh in order to um have enough capability to go to Mars. But if we achieve orbital refilling in time, then we will launch the first uh [uncrewed] uh Starship to Mars at the end of next year.”
From 29 May 2025, “end of next year” is still Nov/Dec 2026. The window is still named, but the odds are now “50/50”, depending on orbital refilling. Captions read “uncrrewed”; the correction is shown in brackets. This direct quote replaces a CBS paraphrase (“about a 50 percent chance”), which is not quoted as Musk.
Now
6 August 2025.
“Slight chance of Starship flight to Mars crewed by Optimus in Nov/Dec next year. A lot needs to go right for that. More likely, first flight without humans in ~3.5 years, next flight ~5.5 years with humans. Mars city self-sustaining in 20 to 30 years.”
From 6 Aug 2025, “Nov/Dec next year” is still Nov/Dec 2026. The 2026 window is no longer the default; it is a “Slight chance”.
Editorial calculation (90% confidence): ~3.5 years after 6 Aug 2025 ≈ February 2029; ~5.5 years ≈ February 2031.
Recorded 22 December 2025, published 6 January 2026. Peter Diamandis asked: “Are you shooting for a Mars shot by the end of next year?” Musk:
“We could, but uh it would be a low probability shot um and somewhat of a distraction. So um 29 then it's not out of the question.”
Diamandis, not Musk, then said “28, 29.” Musk named “29” and did not repeat “28.”
Editorial reading (80% confidence): recorded 22 Dec 2025, so “end of next year” = end of 2026, the window Musk had dated in Statement A. Alternative (20%): a January 2026 listener could hear “next year” as 2027.
Latest: 20 October 2026 (Starship cadence)
On SpaceX’s Q3 2026 earnings call, one day after this finding’s original as-of date, Musk gave new Starship cadence targets:
“For Flight 15, which we expect to happen next month, we're going to attempt to catch both the booster and the ship.”
“We expect Starship to fly weekly at some point in the first half next year, and then second half next year, twice weekly, or maybe even more frequently than that.”
Editorial calendar reading: from 20 Oct 2026, “next month” = November 2026 and “next year” = 2027, so weekly flights in H1 2027 and twice weekly in H2 2027. These are cadence and reuse targets, a prerequisite for Mars flights, not the Mars proposition itself. The call transcript does not mention Mars: the 2026 window was neither restated nor withdrawn.
What changed
| Item | Then (Feb 2025; Sep 2024–Mar 2025 restatements) | Now (Aug 2025 → Dec 2025) |
|---|---|---|
| 2026-window uncrewed launch | “default plan”; “will launch in 2 years”; “departs … at the end of next year” | “Slight chance”; “low probability shot and somewhat of a distraction” |
| Stated alternative | Not given as the primary plan | “More likely … ~3.5 years”; “So um 29 then it's not out of the question.” |
| Probability language | Plan / will | Slight chance / low probability / a lot needs to go right |
| Latest (20 Oct 2026) | — | No Mars date given; Starship “weekly at some point in the first half next year” (2027) |
The 2026 deadline was named (Nov/Dec 2026), then later described as unlikely.
What did not change
- Uncrewed before crew. Sep 2024: crewed flights “in 4 years” if landings go well. Mar 2025: human landings “as soon as 2029, although 2031 is more likely.” Aug 2025: “~5.5 years with humans.”
- Transfer-window constraint. “every two years or every 26 months” (Rogan); “every 26 months” (FII). NASA’s Mars Fact Sheet gives a synodic period of 779.94 days (NASA NSSDC).
- Landing-intact test. “test the reliability of landing intact on Mars” (7 Sep 2024);
“provided the first wave does not increment the crater count on Mars”
- Self-sustaining city still decades away. “Mars city self-sustaining in 20 to 30 years.” (6 Aug 2025) — a different proposition from first launch.
April 2024 is not a contradiction. On 8 Apr 2024 Musk said:
“the first Starship that will land on Mars which obviously would not not have people at first I think it's probably within about 5 years”
That is a looser ~2029 horizon given before the 2026 window became the default in Sep 2024.
Neutral conclusion
On the same proposition, Musk’s wording moved from default plan (Feb 2025; also Sep 2024–Mar 2025) to slight chance (Aug 2025) and low-probability shot / distraction (Dec 2025), with 2029 named as not out of the question. Uncrewed-first and Earth–Mars geometry stayed the same; the deadline and probability attached to the 2026 window changed. This is a revision of a dated target, not a claim about motives.
Scope
- Indexed ElonsFAQ corpus plus listed outside sources; not every Musk interview.
- YouTube wording is from automatic captions (ASR).
- “Crewed by Optimus” is still uncrewed of humans.
See also: When will Starship go to Mars?