It Just Dawned On Me... (Spoilers for "Unending")

[SylvreWolfe]

Because then there wouldn't have been an episode.

Did the Ori know that the ship was headed back to earth? Are they even still alive? Did the armies of the Ori know? Did they know about the Asgard tech the ship just received?

[talyn2k1]

Because then there wouldn't have been an episode.

Did the Ori know that the ship was headed back to earth? Are they even still alive? Did the armies of the Ori know? Did they know about the Asgard tech the ship just received?

1. Not for sure, but its a safe bet as that is the only place that the damaged Odyssey would really be safe and defended.
2. The one or two ships that the Odyssey was running from right at the end of the episode know.
3. Probably not, but they will soon.
4. Possibly not. They were just tracking the signature left by the Asgard Power Core (or whatever it was, there is still some disagreement over what exactly was causing the signature), but they may not have necessarily known what was generating it.
Having said that, it doesn't take a rocket scientist to figure out that

Suicidal Asgard + strange new energy signature on one of Earth's ships = the Tau'ri just got some funky new toys.

Although the specifics of what the Odyssey has would probably be a mystery as iirc the Ori have only encountered the Asgard at the Camelot battle so they probably don't know exactly how advanced they are anyway. The mind of Daniel Jackson and any intel gleaned from Gerak would only give limited details.