At a press event for the opening of the astrophotography exhibition, http://is.gd/mFxq, at the planetarium in Bochum, Germany; K. Unger explaining a picture of the PSE of May 31, 2003.

At a press event for the opening of the astrophotography exhibition, http://is.gd/mFxq, at the planetarium in Bochum, Germany; K. Unger explaining a picture of the PSE of May 31, 2003.