(5 votes from 3 institutions)
While space-based telescopes have had a part to play ultimately I feel that it is telescopes like myself that have contributed the most to pushing the boundaries of our knowledge. With current advances in optical engineering we have the ability to create segmented mirrors of considerable size. The scientific possibilities of a single 100m reflecting telescope are considerable, for example, allowing for the detection of biological components in exoplanet atmospheres. One such project was OWL, a project very close to my heart and one that was sadly cancelled before it even began. In light of the breakthroughs that such an instrument could have given the community I recommend the cancellation of the OWL to be reconsidered and for funding to be reinstated to the project.