Around ~35 minutes into the reveal, we can see Zavala looking at a giant structure in the distance on Titan. http://i.imgur.com/J7cSd1L.png Originally, I thought this could be the Dreadnaught. But due to the colossal size of the ship, it isn't plausible (unless it broke apart). However, Oryx had part of his fleet decimated when the Queen attacked. It would be entirely possible for one of the Hive warships/tombships to get caught in Titan's orbit and eventually crash land into the vast ocean. http://i.imgur.com/Rm8nufC.png What do you all think?