▁( where ▁there ▁is ▁less ▁for eground ▁ext inction ▁from ▁the ▁Mil ky ▁Way ) ▁to ▁establish ▁that ▁the ▁void ▁is ▁indeed ▁a ▁void . ▁Additionally , ▁there ▁have ▁been ▁other ▁studies ▁that ▁have ▁mapped ▁the ▁void ▁and ▁others ▁that ▁have ▁determined ▁the ▁rate ▁of ▁galax y ▁out flow ▁from ▁the ▁void ▁to ▁other ▁super cl ust ers . ▁T ogether , ▁these ▁studies ▁provide ▁strong ▁evidence ▁that ▁a ▁void ▁does ▁exist , ▁despite ▁the ▁difficulty ▁of ▁obser ving ▁objects ▁behind ▁the ▁Z O A . ▁ ▁Further ▁efforts ▁to ▁see ▁behind ▁the ▁Mil ky ▁Way ' s ▁Z O A ▁such ▁as ▁the ▁AL FA Z O A ▁and ▁AL F AL FA ▁surve ys ▁may ▁be ▁able ▁to ▁perform ▁more ▁accurate ▁measurements ▁and ▁place ▁better ▁constraints ▁on ▁the ▁parameters ▁of ▁the ▁void ▁in ▁the ▁future . ▁The ▁surve ys , ▁conducted ▁using ▁the ▁A reci bo ▁radio ▁teles cope , ▁will ▁attempt ▁to ▁look ▁for ▁light ▁from ▁distant ▁galaxies ▁that ▁has ▁been ▁red shift ed ▁to ▁a ▁w avel ength ▁that ▁will ▁stand ▁out ▁in ▁comparison ▁to ▁the ▁noise ▁caused ▁by ▁the ▁Mil ky ▁Way ' s ▁Zone ▁of ▁A void ance . ▁However , ▁these ▁surve ys ▁have ▁limited ▁range ▁in ▁the ▁north - s outh ▁( decl ination ) ▁direction , ▁due ▁to ▁operation ▁constraints ▁of ▁the ▁A reci bo ▁teles cope . ▁ ▁See ▁also ▁▁ ▁Void ▁( astr onomy ) ▁ ▁Lar ge - scale ▁structure ▁of ▁the ▁universe ▁ ▁Per se us - P is ces