The Moon is the most visible object in our night sky, and it’s even sometimes visible in daylight. Have you noticed the patterns of the different Moon shapes, or phases, you can see? Keeping a Moon Journal for a month is a great way to see those patterns and be able to predict the phase that will appear the next night and next week.
Look at the Moon You may start on any day of any month. Record the date and time of your first observation.
Draw the Moon Draw the Moon as you see it in the sky.
Repeat Do the same thing every day for an entire month, at least 30 days. If you can’t see the Moon one day, leave that day blank. We’ll fill it in later.
See a pattern? What patterns do you see? Use the patterns to predict what the Moon looked like on days you didn’t see it. Draw in the Moon for any days that are blank in your journal.
Check your work
Once you are done observing for the month and filling in any blank days, check that your drawings are in the same order as
Label the moon phases
to label the eight moon phases in your journal.
What makes it do that? Moon phases are caused by the relative position of the Sun, Moon and Earth.
Now that you're familiar with the phases of the Moon, you can build
this Moon Phase Calendar and Calculator so you’ll know when and where to look in the sky for every phase of the moon this year! Find out more about the Moon and the NASA robots and humans who have visited it on the NASA Moon Website .