lowkey screaming

So sorry about that, I thought I sent an answer annnnd I didn't!!!

It is definitely possible for Emet-Selch to find the "whirlpool" constellation which will reveal its origins is actually that of something that looks like a snake. For both of these successful attempts, the following will happen:

• The crab constellation will have the ceiling flash in hues of blue while the whirlpool snake constellation will have it flash in hues of green.
  
• A silhouette that looks suspiciously like Norhpip will also appear over the ceiling. Something similar will happen with the snake constellation, a silhouette of a much larger creature.
  
• Both instances will have a mirror flash and ripple. One mirror will flash in hues of blue, another mirror will will flash in hues of green. Both mirrors will be somewhat tall and along the wall (exact location not important). When the ripple ends, there will be a brief glimpse of strange landscapes reflected on the mirror's surface.
  
  
  • For the blue mirror, it's stone walls, as if in some kind of building. There are hints of perfectly cut masonry, suggesting perhaps a grand room. Temple? Cathedral? Something of grand significance.
    
  • For the green mirror, all that is visible are lush green fields and blue skies, some branches overhanging from the top.
  
  For both mirrors, a strong sense of magic can be felt before it all flickers after a few seconds and disappears.
  
• Recreating the constellations again will produce the same result, and those who manage to touch the mirror before the images fade will be repelled back as if by a great magical force. No harm will be done, but there will be loud clicks as if something is being reset. But the mirrors will not change, it will always be the same mirrors for those constellations.

Significant progress will be made with these discoveries, but more must still be done...