This would lead scientists to believe that the Taurus Void is emptier than it actually is, because they can not observe the galaxies that may be present.
[9] Together, these studies provide strong evidence that a void does exist, despite the difficulty of observing objects behind the ZOA.
Further efforts to see behind the Milky Way's ZOA such as the ALFAZOA[10] and ALFALFA[11] surveys may be able to perform more accurate measurements and place better constraints on the parameters of the void in the future.
The surveys, conducted using the Arecibo radio telescope, will attempt to look for light from distant galaxies that has been redshifted to a wavelength that will stand out in comparison to the noise caused by the Milky Way's Zone of Avoidance.
However, these surveys have limited range in the north-south (declination) direction, due to operation constraints of the Arecibo telescope.