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A group of students look at a globe of Mars as they get ready for their comets workshop at a Young Scientists Conference at Mann School on Saturday. | Jon Langham~for Sun-Times Media
Rachel Kralik studies a globe of the moon at a Young Scientists conference at Mann School in Oak Park on Saturday. | Jon Langham~for Sun-Times Media
Astrophysicist and astronomer Sally Laurent-Muehleisen leads the Investigating Comets workshop. | Jon Langham~for Sun-Times Media
Astrophysicist and astronomer Sally Laurent-Muehleisen shows some photos of the Hale-Bopp comet to students attending the Young Scientists conference at Mann School on Saturday. | Jon Langham~for Sun-Times
OAK PARK Kate Benson stirs water and dirt in an orange bowl lined with a kitchen trash bag. Shive Opal squeezes in carbon in the form of corn syrup from a condiment bottle, and “Scientist Sally,” as Dr. Sally Laurent-Muehleisen calls herself, adds ammonia from … Read More
