We are moving through the cosmos. We can tell because the temperature of
the Cosmic Microwave Background is 0.1% higher in our direction of motion
- it contains a "dipole" imprint due to the Doppler effect. If our
standard picture of cosmology is right, this dipole should also occur in
the surface density of distant galaxies on the sky. I present the first
evidence for this effect, using the distribution of radio galaxies. This
result supports the standard cosmological interpretation of the CMB.