I love the 6 week emphasis on outer space because there are so many fun ways to expand on our studies at home! Here are few additional resources for phases of the moon.
30 Day Moon Journal (free)
Moon Calendars for 2017 (for purchase)
Don't forget that 2017 is a year of a total solar eclipse! Read more at space.com
And lastly, my kids' favorite: Phases of the Moon snack time! ;)