We report the detection in Ly alpha of a collimated, bipolar outflow (HH 40
9) associated with the 1.5-10 Myr old Herbig Ae star HD 163296. A blueshift
ed jet is visible in Ly alpha and Si III extending toward the southwest for
at least 6" (725 AU). The combination of low line-of-sight extinction and
relative faintness of the central star near Ly alpha enables us to trace th
e jet to within an unprecedented 0".06 (7.3 AU) of HD 163296. The jet has a
radial velocity of 335-380 km s(-1), which is common for protostellar outf
lows. We also detected redshifted Ly alpha emission southwest of the star t
hat may be due to infall or a poorly collimated wind component. If the age
of the star is correct, then protostellar outflows may last up to 10 times
longer than previously believed.