  We report the discovery of an X-ray nebula associated with the nearby
millisecond pulsar PSR J2124-3358. This is the first time that extended
emission from a solitary millisecond pulsar is detected. The emission extends
from the pulsar to the northwest by ~ 0.5 arcmin. The spectrum of the nebular
emission can be modeled by a power law spectrum with photon index of 2.2
+/-0.4. This is inline with the emission being originated from accelerated
particles in the post shock flow.
