universetoday.com
Summer Solstice - Universe Today
The summer solstice occurs once a year, and there is also a winter solstice each year. During both solstices, the tilt of the Earth’s axis is at its extreme either toward or away from the Sun. The tilt of the Earth does not actually change – it stays at 23.5° – however, the Earth also … Continue reading "Summer Solstice"