AI illustration: Humans on Mars: best case 10 years, worst case 15-20 (2011)
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Missed

Humans on Mars: best case 10 years, worst case 15-20 (2011)

“Well, we're going all the way to Mars, I think — best case 10 years, worst case 15 to 20 years.”
— Elon Musk · Apr 22, 2011 · The Wall Street Journal (official channel) — 'Elon Musk: I'll Put a Man on Mars in 10 Years', interview with WSJ's Alan Murray ↗
Video: The Wall Street Journal (official channel) — 'Elon Musk: I'll Put a Man on Mars in 10 Years', interview with WSJ's Alan Murray
▶ WATCH HIM SAY IT — THE WALL STREET JOURNAL (OFFICIAL CHANNEL) — 'ELON MUSK: I'LL PUT A MAN ON MARS IN 10 YEARS', INTERVIEW WITH WSJ'S ALAN MURRAY
What actually happened

The best-case 10-year mark passed in April 2021 with no human having traveled beyond low-Earth orbit since 1972, let alone to Mars. Fifteen years on (2026), still no crewed Mars mission exists or is scheduled: in September 2024 Musk re-baselined to uncrewed Starships in the late-2026 window with crewed flights about four years after that — putting his own new best case at roughly 2028-2031, the tail end of his 2011 worst case. Space.com — Musk: first Starships to Mars in 2026, crewed flights ~4 years later (Sept 2024) ↗

The Progression

Apr 22, 2011
The promise: “Well, we're going all the way to Mars, I think — best case 10 years, worst case 15 to 20 years.” · The Wall Street Journal (official channel) — 'Elon Musk: I'll Put a Man on Mars in 10 Years', interview with WSJ's Alan Murray ↗
Apr 22, 2021
Deadline passed. The best-case 10-year mark passed in April 2021 with no human having traveled beyond low-Earth orbit since 1972, let alone to Mars. Fifteen years on (2026), still no crewed Mars mission exists or is scheduled: in September 2024 Musk re-baselined to uncrewed Starships in the late-2026 window with crewed flights about four years after that — putting his own new best case at roughly 2028-2031, the tail end of his 2011 worst case. Space.com — Musk: first Starships to Mars in 2026, crewed flights ~4 years later (Sept 2024) ↗
Today · Jun 12, 2026
Status: Missed · on time. Never happened.

In an April 2011 Wall Street Journal interview, a year after Falcon 9's first flight and before Dragon had ever carried cargo to the ISS, Musk said SpaceX would put a person on Mars in 10 years best case, 15 to 20 worst case. It is the earliest widely-circulated version of the Mars timeline he has restated and slipped ever since — by 2024 his own best case had moved to roughly 2028-2031.

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