If aliens sent you an encrypted binary message, could you answer? René Heller, an astrophysicist at the Max Planck Institute for Solar System Research, wants to hear from you.

Last month, Heller posed a hypothetical question as part of the #SETIDecryptChallenge: “Suppose a telescope on Earth receives a series of pulses from a fixed, unresolved source beyond the solar system,” he wrote. “It turns out the pulses carry a message.”

The encrypted message is a vast sea of 0’s and 1’s. You can see it here, but here’s a GIF for your convenience.

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