- last post: 01.01.0001 12:00 AM PDT
The Sentinels, sent by spark at the end of "the covenant", went somewhere important, or Bungie wouldn't have used the sequence. I think they went to the planet (presumably onyx) to help rebuild it. However, Onyx might have been rebuilt during the period between H1 and H3 and the sentinels were sent there for something completely different.
Spartankilljoy, the problem with the dyson spheres theory is that they appear to be a couple of meters across if seen from the exterior. The inside is huge. therefore, the "thing" you see at the end of legendary cant possibly be a dyson sphere. If you have read the book, "Ghosts of onyx" The dyson sphere is inside Onyx and the sentinels were probably sent to protect it.
Maybe chief will wake up after cortana gets a distress call from something inside the dyson sphere... (maybe a spartan)?
[Edited on 11.29.2007 9:19 PM PST]