NASA's Mars Parachute Hid Secret Message, Internet Solved It

A 70-foot parachute unfurled over Mars carrying more than just a spacecraft to safety.

NASA engineer Ian Clark, a crossword puzzle enthusiast, had woven a secret message into the orange and white stripes of Perseverance's supersonic parachute. The pattern looked decorative, almost festive, but it was actually doing two jobs at once.

The stripes served a critical engineering purpose first. When a parachute opens at faster than sound speed in Mars's thin atmosphere, mission control needs to know immediately if the canopy has twisted. The contrasting sections let engineers read the parachute's orientation at a glance and track how different portions inflate on high speed cameras.

But Clark saw an opportunity hiding in plain sight. He treated the rings of orange and white fabric like binary code, with each colored section representing ones and zeros. Only about six people knew the secret before touchdown.

The trick was making it real without making it obvious. Clark described his challenge as "trying to come up with a way of encoding it but not making it too obvious." He'd been sitting on the idea for a couple of years before launch.

During the February 22 news conference, mission leader Allen Chen didn't just confirm a message existed. He dared people to find it. "Sometimes we leave messages in our work for others to find for that purpose," he said. "So we invite you all to give it a shot and show your work."

The internet delivered in spectacular fashion. Within six hours, people had translated the binary and plotted the coordinates. Perseverance's chief engineer Adam Steltzner watched it unfold in real time. "It looks like the internet has cracked the code in something like 6 hours!" he tweeted. "Oh internet is there anything you can't do?"

The three inner rings spelled out "Dare Mighty Things," the motto of NASA's Jet Propulsion Laboratory, borrowed from a Theodore Roosevelt speech. The outer ring contained GPS coordinates pointing not to Mars but back to Earth, landing about 10 feet from the entrance to JPL's visitor center in Pasadena, California.

A parachute drifting down onto another planet carried the address of the building where it was built.

Why This Inspires

The puzzle was hard enough to be satisfying and easy enough to be solved by dinner. Clark designed it for people who would recognize a ring pattern as binary, inviting them to join the mission from their living rooms.

There's something beautiful about building a tool meant to be read by cameras in the Martian sky and hiding inside it a message for people squinting at screens on Earth. The pattern cost almost nothing extra to create, but it turned a diagnostic instrument into an invitation.

The engineering pointed at Mars. The message pointed home, reminding us that exploration isn't just about reaching distant worlds but about bringing people along for the journey.