A rare lunar occultation will occur on April 25, when the Moon passes directly in front of Regulus, the brightest star in the constellation Leo. The show will begin shortly after 8:30 p.m. as Regulus appears to disappear behind the Moon, but will reappear 62 minutes later. The occultation can be seen with the naked eye, with the aid of binoculars or a small telescope for the reappearance. The precise timing of this event can help astronomers refine their measurements of the Moon’s orbit and position. The Moon will next block Venus from view in June and Jupiter in October.