Question

in 2012, astronomers reported the discovery of a planet that revolved around two sun - like stars. kepler - 34b, a gaseous planet, revolves around the stars every 289 days, and the stars revolve around each other every 28 days. this information was presented in the january 11, 2012, issue of the journal nature. based on the information in the article, which title would be most appropriate? new planet found in open cluster system new planet discovered in binary star system discovery: new globular cluster and planet discovery: star system orbiting new planet

Explanation:

The text describes the discovery of a planet (Kepler - 34b) that revolves around two Sun - like stars. A system with two stars is a binary star system. The key information is about a new planet in a binary star system.

Answer:

B. New Planet Discovered in Binary Star System