GuinGuin

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Canon lore

A plush penguin that flew for real

In April 2021, Crew Dragon Endeavour lifted off on SpaceX’s first twice-flown human flight. On board was a fifth crew member: GuinGuin, the mission’s zero-g indicator — a soft toy that floats the moment orbit kicks in, so everyone sees microgravity without checking an instrument.

Full mission story

Mission archive

The story on orbit

On April 23, 2021, NASA astronauts Shane Kimbrough and Megan McArthur, ESA’s Thomas Pesquet, and JAXA’s Aki Hoshide introduced their floating companion during a tour of the capsule. We have a fifth crew member and he can actually fly! Hoshide said. It is a penguin that our boys chose and his name is ‘GuinGuin.’ Welcome GuinGuin to space!

The roughly 7-inch (18 cm) gray-and-white plush served as Crew-2’s zero-g indicator. About nine minutes after launch from Kennedy Space Center, as Endeavour reached orbit, GuinGuin began to drift on his tether — live video showed the toy bouncing weightlessly, a tradition borrowed from early crewed spaceflight and continued by SpaceX on Crew Dragon flights (after plush Earth, Tremor the dinosaur, and Grogu on earlier missions).

Commander Kimbrough noted it was really cool seeing GuinGuin start flying after we hit zero-g. The doll was a Jellycat “My First Penguin” — picked, as custom often goes, by crew members’ children. In press comments, Elon Musk called the zero-g indicator this cute fluffy penguin that is floating around in zero-g right now. Demand for the toy spiked worldwide. GuinGuin became a tiny symbol of weightlessness — soft, silly, and completely real.

Visual proof

Straight from the cabin

Cabin footage from Dragon, plus the flight deck where the crew worked — with the actual Jellycat “My First Penguin” plush right in the same panel as the story.

GuinGuin plush penguin floating inside the spacecraft cabin — Zero-g in action — GuinGuin floats on tether while the cabin lights catch the black & white plush against hardware and cable runs.

Crew Dragon Endeavour flight deck with three displays and astronaut — *Endeavour* flight deck — tri-screen console, orbital graphics, and the same mission environment where the crew welcomed their smallest flyer.

Jellycat My First Penguin plush toy with product packaging — *Endeavour* flight deck — tri-screen console, orbital graphics, and the same mission environment where the crew welcomed their smallest flyer.

Timeline

Crew-2 snapshot

Apr 23, 2021 Launch of Falcon 9 and Crew Dragon Endeavour with four astronauts + GuinGuin as zero-g indicator.
T+ ~9 min Orbital insertion — plush begins to float; crew confirms microgravity visually.
In orbit Onboard tour video: Welcome GuinGuin to space! — fifth crew member goes viral.
Legacy Part of a long line of soft zero-g indicators from Soviet/Russian flights through modern Commercial Crew — cute, practical, unforgettable.

Why it matters

Soft toy, hard science

Zero-g indicators are not decoration — they are an intuitive human cue in a environment where your inner ear cannot tell you which way is “down.”

Instant read

When the toy leaves the seat and hovers, every viewer understands: we’re in free fall with the spacecraft — the same physics that keeps astronauts floating.

Crew tradition

Families often choose the toy. GuinGuin connects the mission to kids on Earth — science communication wrapped in something huggable.

Cultural footprint

From livestream clips to headlines, the penguin became a friendly face of the Commercial Crew era — proof that serious engineering can have a soft side.

Ride the momentum

Follow the flight deck chatter, drops, and lore drops — or grab your spot early.

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