September Qué tal Now Available

   Many interesting celestial events this month including minor meteor showers, the September equinox, and conjunctions with our Moon, planets, and stars. Venus and Saturn and the star Spica have some close conjunctions in the evening skies at sunset. In the east before sunrise look for Jupiter to be the point of a triangle with the twin stars. Mars will pass through M 44, the Beehive Cluster, an open star cluster in Cancer.

   
   
   Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.

March 2013 Equinox

   Today is an equinox day meaning that for us in the northern hemisphere winter is ending and spring has sprung. For our counterparts south of the equator summer is ending and fall is beginning. From a geographical perspective we would describe the Sun as being over the Earth’s equator, and as this graphic shows there would be an equal amount of daylight and night on our planet as a result.
    At the equator the sun is directly overhead and from that latitude you have no shadow, just a ‘blob-like’ shadow at your feet as this picture of my feet taken at mid-day in Quito Ecuador shows.

    Regardless of your hemispheric preference get outside and cast a shadow!

  Northern hemisphere spring begins at 6:02 am CDT when the Sun reaches the celestial coordinates of 0 hours and 0 degrees as it moves northward along the ecliptic crossing the celestial equator. To learn more about the celestial coordinates click here to read a previous post about seasons and the equinox.

   Click here to see the online world sunlight map used to make the day/night graphic above.

sun-earth
   Click here to go to the NASA Sun-Earth Days web site.

   Here is a short series of hourly pictures taken during the day on the September equinox on the equator in Quito Ecuador at Collegio Menor San Francisco de Quito, a private school that I visited and did the SunShIP project with (Sun Shadow Investigation Project).

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Click here to go to the Qué tal in the Current Skies web site for more observing information.