Astronomy Picture of the Day . ... Credit Copyright: Left : Fred Espenak - Right : Stephan Heinsius Explanation: April's spectacular geocentric celestial event was a rare hybrid eclipse of the Sun - a total or an annular eclipse could be seen depending on the observer's location. ... How rare is such a hybrid eclipse? ... Publications with keywords: total solar eclipse - annular solar eclipse . Publications with words: total solar eclipse - annular solar eclipse . ... Annular Solar Eclipse . ...