The wormhole engaged way faster than it normally does when they sent SG-1 through without Jack and Daniel.
In this episode when we see O'Neill writing the instructions on how to fix the DHD, he's using a pencil. However when we see the completed instructions later on, they're written in purple ink.
Daniel called P3X-972 (Heliopolis) PB2-908.
In "Children of the Gods", it was stated that the SGC dialing computer needed 2 months to give 1 or 2 addresses from the Abydos cartouche, but they said it only took days in this episode.
Sam: Colonel! What are you doing?
Jack: (playing with a little tube) I need this.
Sam: What for?
Jack: I have no idea.
Hammond: Colonel, are you sure you're okay?
Jack: I am absolutely fine. There is nothing cruvus with me. (they all look at Jack puzzled)
Daniel: You just said there's 'nothing cruvus' with you.
Jack: I did not.
Daniel: Yes, you did.
Jack: No I didn't.
Daniel: Yes, you did.
Jack: Cruvus, what is that!?
Jack: (to the Asgard) Uh... Look... you all seem to be quite wonderful... people... And I don't want to sound ungrateful because I really, really appreciate you getting all that stuff out of my head. But you folks should understand... that we're out there now, we might not be ready for a lot of this stuff, but we're doing the best that we can... we are a very curious race.
Jack: Daniel, how long you figure we ought to hang out here and scratch our cosmic heads?
Daniel: I think the circle means 'The Place of Our Legacy'. Um...Or it could be 'A Piece of Our Leg,' but the first seems to make more sense.
Daniel: No idea. Well, actually not no idea, just not much of one yet, but work on it.
Jack: Well, this was an intergalactic waste of time.
Syndication air date: January 31, 2000.
This episode marks the first direct reference to the Ancients, the builders of the Stargates, on the series. The Ancients created the Stargate system and were in an alliance of four great races: the Nox, the Furlings, the Asgard, and the Ancients. They once resided in the galaxy of Ida, (where the Asgard live), and our galaxy but moved on from these regions of space leaving an archive of their knowledge, The Place of Our Legacy, on P3R-272.
The homeworld of the Asgard takes its name from the rune meaning, appropriately enough, "Home" and similar concepts.