We present Very Long Baseline Interferometry ( VLBI ) observations 217 days after the \gamma -ray burst of 2003 March 29 .
These observations provide further measurements of the size and position of GRB 030329 that are used to constrain the expansion rate and proper motion of this nearby GRB .
The expansion rate appears to be slowing down with time , favoring expansion into a constant density interstellar medium , rather than a circumstellar wind with an r ^ { -2 } density profile .
We also present late time Arecibo observations of the redshifted H i and OH absorption spectra towards GRB 030329 .
No absorption ( or emission ) is seen allowing us to place limits on the atomic neutral hydrogen of N _ { H } < 8.5 \times 10 ^ { 20 } cm ^ { -2 } , and molecular hydrogen of N _ { H _ { 2 } } < 1.4 \times 10 ^ { 22 } cm ^ { -2 } .
Finally , we present VLA limits on the radio polarization from the afterglow of < 2 % at late times .