Star Wars Episode IX: The rise of Skywalker will take us to the ruins of the Deathstar

Take a good look at the image above. That's the cannon disk section of the Deathstar. This brings so many questions:

• Is this the first or second Deathstar?
• Is this Yavin IV or Endor? (it seems more la Yavin IV to me, but who knows). Although, the pieces of the Deathstar could have also landed on another planet in the Yavin or Endor system.
• What are they looking for in there? (either the planet or the ruins).
• Is this connected to the Emperor's return (in case you don't know it yet, he is back for Episode IX).
• If this is Endor, then Kylo Ren has definitely been here before to retrieve Vader's burned helmet.
• Is this actually relevant to the plot?
  
• But most important: if this is Endor, are we going to see the EWOKS again????  

J. J. Abrams is definitely applying the same formula used for The force Awakens, and that's using as much of the familiar visual elements from the original trilogy as possible. so bringing our heroes and villains to the place where the Empire was defeated is like bringing the saga full circle to him. or maybe it is just that, a visual element to gives us a sense of nostalgia and connection between trilogies.

Any thoughts?