Here is a little known JPL project: MIRO (Microwave Instrument for the Rosetta Orbiter) is a scientific instrument on the European Space Agency's ROSETTA Spacecraft. MIRO will measure the near surface temperatures of the asteroids OTAWARA and SIWA, and the comet WIRTANEN, thereby allowing scientists to estimate the thermal and electrical properties of these surfaces. In addition, the spectrometer portion of MIRO will allow measurements of water, carbon monoxide, ammonia, and methanol in the gaseous coma of comet WIRTANEN. These measurements will allow scientists to study how the comet material changes from its frozen state to a gas in time and distance from the sun.