Sky Tonight—March 20, The 2011 March equinox
The equinox represents a point on Earth’s orbit, but it is also an event that happens on the imaginary dome of Earth’s sky.
EarthSky Tonight—September 24, Harvest moon, Jupiter still out dusk to dawn
Why does the Full Harvest Moon in particular – the full moon closest to the autumn equinox – bring about dusk-till-dawn moonlight for several nights in succession?
EarthSky Tonight-Sept 23 Harvest Moon, Jupiter, equinox
September 2010 presents the only time in your lifetime that you will be able to witness the moon and Jupiter’s simultaneous all-night appearance on the equinox
EarthSky Tonight—September 20, Fastest sunsets of the year around equinox time
The fastest sunsets (and sunrises) occur at or near the equinoxes.
Earthsky Tonight —The 2010 equinox comes on March 20
The March equinox marks that special moment when the sun crosses celestial equator, going from south to north. It happens today at 17:32 Universal Time, or 11:32 p.m. Mountain Daylight…