Wiesław Z. Wiśniewski small asteroids as well as taxonomic measurements of asteroids. At the time of his death, he was actively planning to participate in a network of telescopes to observe the impacts of comet Shoemaker-Levy 9 on Jupiter. He had obtained one of the early high resolution images of the comet on March 28, 1993 while using the Steward Observatory 90 inch telescope. Wiesław Z. Wiśniewski Wiesław Z. Wiśniewski (May 2, 1931 in Poland – February 28, 1994 in Tucson, Arizona, United States) was a Polish astronomer. Wisniewski was born and educated in Poland. He survived the Nazi occupation and many of
Comet Shoemaker–Levy 9 Despite published predictions, astronomers had not expected to see the fireballs from the impacts and did not have any idea in advance how visible the other atmospheric effects of the impacts would be from Earth. Observers soon saw a huge dark spot after the first impact. The spot was visible even in very small telescopes, and was about (one Earth radius) across. This and subsequent dark spots were thought to have been caused by debris from the impacts, and were markedly asymmetric, forming crescent shapes in front of the direction of impact. Over the next six days, 21 distinct impacts