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.

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In 1990, our sun is expected to enter a period of unusually high activity—perhaps the highest in centuries—producing many sunspots and solar flares.
NASA