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Most of the planets that have been discovered outside our solar system orbit G-type stars, like our Sun. In 2014, researchers identified a planet orbiting KELT-9, a B-type star more than twice as massive and nearly twice as hot as the Sun. Called KELT-9b, it is one of the hottest planets ever discovered. __________, it is one of the hottest planets ever discovered.<br/><br/>Which choice completes the text with the most logical transition?