We find classical solutions of two dimensional noncritical string theory
which give rise to geometries with spacelike boundaries, similar to spacetimes
with cosmological event horizons. In the c=1 matrix model, these solutions have
a representation as simple time dependent configurations. We obtain the causal
structure of the resulting spacetimes. Using the macroscopic loop transform, we
probe the form of the tachyon condensate in the asymptotic regions.Comment: 22 pages, 5 figures, v2: reference added, v3: minor correction