the sun at the minimum of solar activity, occurring every 11 years.
the unchanging background of solar phenomena.
What Exactly Is The Spring Equinox?We get pretty excited about the spring equinox bringing us out of winter and officially starting the season of spring. But what exactly is the spring equinox? And does an equinox happen at the start of every season? First, let’s get into the equinox, which actually occurs just twice a year. The word equinox comes from Latin and means “equality of night and day.” So, the …
What Does “Winter Solstice” Mean?The winter solstice lasts for just one moment. It occurs exactly when the Earth’s axial tilt is farthest away from the sun. This usually happens around December 21 or 22 in the Northern Hemisphere or June 20 or 21 in the Southern Hemisphere. If you’re in the Northern Hemisphere, during the solstice the sun will be at its southernmost point in the sky. The higher …
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019