Astronomy students are planning an investigation to study the Andromeda galaxy. In order to be able to study the galaxy as clearly as possible, they will need to see the night sky with zero percent (0%) illumination from the moon. The students observed a full moon on May 3rd. What is the approximate date the investigation should be done May 10 May 17 May 24 May 31
When it refers to 0% light it describe a new moon, from a new moon to a full Moon are 14 days, then if you start a full moon on May 3 and you add 14 days it means that the next new Moon would be on May 17.