Re:Too much interference (Score 1)

Hubble has done a great job, but IIRC it is a few billion dollars and a 2.5 meter mirror. A 100-meter mirror is 1600 time more collecting area, and given the atmosphere, at least 200 times more photons. So, you can do some things Hubble can't. When you need a 20-ton spectrometer that needs a new dose of liquid nitrogen every six hours, and have a set of 30 grisms and filters that need to be switched manually, space is not an option. At a ground-based telescope, you can have several such instruments and swap them in and out when needed. You certainly won't find a launcher that could carry a 100-meter mirror, so it should be built in space. Assembling a 1000-element mosaic mirror with 50-nanometer precision is not easy on ground, and in space it is impossible.