"If blind nature deposited this mess around the star, it must have done so recently. Otherwise, it would be gone by now. Gravity would have consolidated it, or it would have been sucked into the star and swallowed, after a brief fiery splash."
“We’d never seen anything like this star.”
“It was really weird. We thought it might be bad data or movement on the spacecraft, but everything checked out.”
“It looked like the kind of thing you might expect an alien civilization to build.”