He received his Ph.D. in planetary science from the University of Arizona in 1988. His research interests include planetary atmospheres and planetary astronomy, with one focus on the odd case of Jupiter�s moon Io. He is also the lead on the Imaging UltraViolet Spectrograph on the upcoming MAVEN mission to Mars. He enjoys teaching at all levels and is active in efforts to improve undergraduate astronomy education. Off the job, he enjoys exploring the outdoors with his family and figuring out how things work. Home