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My research focuses on observational studies of young stars, star-formingÌýregions, and massive Wolf-Rayet stars. I make use of several space-basedÌýtelescopes including the Chandra and XMM-Newton X-ray observatories, theÌýSpitzer infrared telescope, and ÌýHST in the ultraviolet. I have been usingÌýthese telescopes and others including the Very Large Array (VLA) toÌýdetermine the properties of high-speed bipolar jets ejected by youngÌýstars and how such jets are heated to UV and X-ray emitting temperatures.ÌýI am also investigating the effects of X-ray heating on the circumstellarÌýdisks and protoplanets surrounding young T Tauri stars. My interest inÌýWolf-Rayet stars (which are supernova progenitors) centers on the originÌýof their bright X-ray emission and its relation to high-temperatureÌýshocks formed in their supersonic winds.