TAU, Thousands of Astronomical Units, was intended to fly -wait for it- thousands of astronomical units up out of the dusty galactic plain to give us a clear view of the core and extent of our home galaxy and a very good baseline for a stereo view of local stars and systems.
This would not only provide us accurate distances to all the visible stars but a superb dust-free view of our own galaxy as well.
If you think the Hubble images are grand, you ain't seen nuthin'!
dang, FReepers are smart.
Thanks for making me not have to post.