Apollo 11 on the moon began researching the exact distance from Earth to the moon. To do this, they brought devices resembling small arrays of mirrors – they are called retroreflectors
Research using such a simple device continues to this day
Apollo 11 on the moon began researching the exact distance from Earth to the moon. To do this, they brought devices resembling small arrays of mirrors – they are called retroreflectors
Research using such a simple device continues to this day
