to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
As you can see, this GIF is inaccurate as the moon appears to over-rotate just before it goes behind the Earth, where the Moon presents its far side towards the Earth. In addition, the Moon also appears to be "geostationary" in this inaccurate GIF.