Rendevous With Rama, a 1972 novel written by Sir Arthur C. Clarke, is about an asteroid sized alien starship that enters the Solar System in the 22nd Century. A human spaceship crew enters and explores the huge vessel and has to leave when the crew discovers the ship is heading toward the Sun, apparently toward its doom.
The ship doesn’t destroy itself however. Instead it extends a filament into the Sun’s corona and draws the Sun’s material into itself; thus rebuilding losses incurred while traveling immense distances between the stars.
Below is a supposed photo by the NASA Solar Dynamic Observatory of a phenomenon doing just that. And it’s not just a Rama-sized asteroid object, it’s a stellar sized Death Star object!
Stellar Filament or Death Star Refueling?