An analemma is that figure-8 curve that you get when you mark the position of the Sun at the same time each day throughout the
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As the Sun crosses the celestial equator heading south, spring begins in the southern hemisphere and autumn in the north. And though the seasonal connection
Earthshine is Earthlight illuminating the Moon’s night side. Taken on Nowruz, the March 20 equinox, from Esfahan, Iran, this telescopic image captures strong Earthshine from
There are a set of statues, Ahu Akivi, in the center of the Easter island that represent the original explorers. I knew that the picture to
A Full Moon rising can be a dramatic celestial sight, and Full Moons can have many names. For example, Sept. 12 full Moon was the
The NASA Cassini spacecraft flew only 97 kilometers (60 miles) above the surface of Saturn’s moon Rhea and found that it has an atmosphere composed
In March 2010, The NASA Cassini spacecraft flew only 97 kilometers (60 miles) above the surface of Saturn’s moon Rhea and found that it has