The Hubble Space Telescope is to be a long-lived observatory with wide-ranging spectroscopic and imaging capability in the UV and the visible, and in the near-IR as the second-generation instruments are implemented. HST will have a dramatic impact on our view of the universe. However, it is by no means premature to address the issue of its successor, even though HST has not yet been launched. We must look ahead with the realistic view that HST will degrade and will need to be replaced. The question that we must then address is:What is the UV-Visible-IR Observatory that will follow HST?I will make the case for this being an 8-16 m class telescope.
Near-IR Fabry-Perot interferometer for widefield low-resolution hyperspectral imaging on the Next Generation Space Telescope