double star

The park service is enticing potential visitors by telling them that they could see “an assortment of planets, double stars, star clusters, nebulae and distant galaxies by night.”

And a smaller quibble: movie also purports in an early scene to show the double star Mizar and Alcor, but the photograph on screen is not of them.

“You can look for satellites and constellations and double stars,” Oluseyi says.

Stellar-size black holes call attention to themselves as they cannibalize their companions in double star systems.

The second star on the “handle” of the Plough is a naked-eye double star.