Calendar

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.

Conjunction of Venus, Mars and Regulus

Venus and Mars are Alright Tonight! There is a conjunction of Venus, Mars and the star Regulus in the western sky after sunset on July 5th.

Delta-Aquariids Meteor Shower

The Delta Aquariids are active beginning in mid-July and are visible until late-August. These faint meteors are difficult to spot, and if there is a moon you will not be […]

Mercury at Aphelion

Mercury's 88-day orbit around the Sun will carry it to its furthest point to the Sun – its aphelion – at a distance of 0.47 AU.

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.

Partial Lunar Eclipse

A partial lunar eclipse will take place on this day - it will be completely visible over Europe and most of Asia and Africa.

Uranus at Opposition

Uranus will be in opposition to the Sun on this date; this is when the Earth is positioned between the Sun and Uranus.