  Gamma-Ray Bursts (GRBs) are believed to originate in compact remnants (black
holes or neutron stars) of massive stars. Their high luminosities make them
detectable out to the edge of the visible universe. We describe the many
advantages of GRB afterglows relative to quasars as probes of the intergalactic
medium during the epoch of reionization. The Swift satellite, planned for
launch by the end of 2003, will likely open a new era in observations of the
high redshift universe.
