Astronomical Events of 1990: A Stargazer's Almanac

Take a look back at the astronomical events of 1990, including sunspots, solar flares, Northern Lights, eclipses, meteor showers and comets, and the planetary year.

Sunlight, reaching the moon from the upper left in this illustration, creates its phases: 1) new moon, 2) crescent, 3) first quarter, 4) gibbous, and 5) full. The moon then wanes through the sequence in reverse.