Total Solar Eclipse
The "Great American Eclipse" occurs on this date - don't miss it!
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Astronomical Events
Eta-Aquariid Meteor Shower
The Eta Aquariids are a strong shower when viewed from the southern tropics. From the equator northward, they usually only produce medium rates of 10-30 per hour just before dawn. Activity is good for a week centered the night of maximum activity. These are swift meteors that produce a high percentage of persistent trains, but […]
Mars at Perihelion
On this day, Mars it closest to the Sun in its orbit.
New Moon
New Moon. By the modern definition, New Moon occurs when the Moon and Sun are at the same geocentric ecliptic longitude. The part of the Moon facing us is completely in shadow then. Pictured here is the traditional New Moon, the earliest visible waxing crescent, which signals the start of a new month in many […]
Mercury at Greatest Elongation
Mercury will reach its greatest separation from the Sun on this date.
Conjunction of Uranus & the Sun
Uranus will pass close to the Sun in the sky as its orbit carries it around the far side of the solar system from the Earth.
Summer Solstice
The summer solstice is the day when the Sun appears to reach its highest point in the sky during the year - it marks the start of summer in the Northern Hemisphere.
International Asteroid Day
International Asteroid Day is a United Nations-recognized day observed each year on the anniversary of the Tunguska impact event of June 30, 1908.
Earth at Aphelion
Earth will be at the farthest point in its orbit around the Sun on this date
Mercury 3.2°S of Moon
Mercury will appear close to the crescent Moon in the west-northwestern sky before sunset.
Perseids Meteor Shower
The Perseids are the most popular meteor shower as they peak on warm August nights as seen from the northern hemisphere. The Perseids are active from July 17 to August 24, peaking on August 12 - 13.
First Quarter Moon
The Moon is at First quarter on this date -it will be visible high in the southern sky in early evening.
Autumnal Equinox
Fall begins with the autumnal equinox - in the Northern Hemisphere, it's the September equinox; in the Southern Hemisphere, it is the equinox in March.
Last Quarter Moon
The Moon is at Last Quarter (or Third Quarter) – rising around midnight, and visible to the south after sunrise.
