Which space exploration activity has most helped astronomers determine the age of the moon?(1 point)%0D%0AResponses%0D%0A%0D%0Aplacement of mirrors on the lunar surface%0D%0Aplacement of mirrors on the lunar surface%0D%0A%0D%0Aexperiments performed on the International Space Station%0D%0Aexperiments performed on the International Space Station%0D%0A%0D%0Acollection of lunar rock samples%0D%0Acollection of lunar rock samples%0D%0A%0D%0Acollection of deep space images by the Hubble telescope
