The bright star Regulus will be occulted by the full moon on Feb. 2Stargazers in eastern North America will see something truly rare in the night sky this weekend: a very bright star being occulted by the full " Snow Moon ." After turning full Sunday (Feb. 1), the bright moon will move across Regulus, the brightest star in the constellation Leo, briefly making it disappear from the night sky Monday night (Feb. 2). Skywatchers are in for a treat because this rare event, called a lunar occultation, will be visible to the naked eye from large portions of the U.S. and Canada. After being hidden, it will emerge on the other side of the bright moon — a moment called egress. The next major lunar occultation — an occultation of Venus on June 17 — will occur during daytime hours in North America, so will not be visible.