"We have measured the value of the mean brightness of our Galaxy at the spot where the Moon occults it, to show that the technique works." - Dr. McKinley, ICRAR.
Sources:
Research Paper: "Measuring the global 21-cm signal with the MWA-I: improved measurements of the Galactic synchrotron background using lunar occultation"
ICRAR Press Release: "Moon helps reveal secrets of the Universe"
Wikipedia Entry: Chronology of the universe