To spot the celestial 'smiley face,' skywatchers in the U.S. will need a clear view of the eastern horizon in the hour leading up to sunrise on April 25. Look to the eastern sky a

Just before dawn tomorrow, look up for a moment of cosmic joy. Rare cosmic events can feel like being smiled down upon from up above. However, on the morning of April 25, an actual smiley face will appear in the sky—kind of.

According to NASA, the planetary phenomenon will be clearest about 45 minutes before sunrise, low in the eastern sky and appearing near the moon. Venus and Saturn will be the easiest to spot — but for those with a clear view of the horizon, Mercury can be observed hanging low and bright in the cosmos.