In 1977, humanity launched a golden record into space and hoped someone, someday, would play it. This term, a crew of 8 to 11-year-olds went to find it. They dodged a Tesla, cracked a colour code under orange light, and dragged themselves through a spacewalk on trolleys. And they got it playing. Then they found out what that had cost, and an android named Luxhini made a choice none of them saw coming.