Okay so this is just speculation, but could the seven gods be the seven planets, aka the Greek god names in the trailers corresponding to a planet (Aphrodite = Venus, Poseidon = Neptune, etc) with then "time" referencing Chronos aka the planet Saturn? And then alignment referencing a particular alignment of planets? Possibly?
So this is what I'm thinking, based on the codes so far. We know the code says "Seven Gods Align. The Lock Hides in Time. A key Formed from their union."
I think that it's very possible that those seven gods both represent the seven planets (besides earth and pluto :( ) in our solar system AND seven major characters from Markiplier lore that are at play in Space.
Aphrodite (aka Venus) = Celine. So I think Aphrodite represents Celine because Aphrodite is the goddess of love and passion. She's desired by many, and literal wars have been fought because of her beauty...sounds an awful lot like our conflict between Will and Mark over Celine, doesn't it? And besides that, Aphrodite is married to Hephaestus, the god of smithing, but she frequently has affairs with...
Ares (aka Mars) = Wilford. Wilford Warfstache, aka the Colonel. It makes sense that a man who is prone to violent outbursts and kills frequently would be represented by the god of war, especially when you remember that Ares has an affair with Aphrodite, and Wilford, back when he was still the Colonel, had an affair with Celine.
Poseidon (aka Neptune) = Damien. I think Damien is represented by Poseidon for a few reasons. For one, Poseidon is the god of the sea, and in the video Damien, Damien taking control back from Celine and letting her rest is represented by the frozen landscape that Celine created melting away. And also, like the ocean itself, Damien is someone who can seem very calm and put together at first, but when he does get angry...hoo boy. Get ready for the waves.
Hermes (aka Mercury) = Abe. This one was a little trickier to figure out, but I think ultimately Abe fits as Hermes because Hermes is the god of messengers. And the entire reason that Abe was invited to the manor party in the first place is that Mark wanted a witness to the events of that night, originally so he could ruin William's life before taking his body. Before the plan went wrong, he was meant to be the one that spread Mark's message that William was a killer. And speaking of Mark...
Zeus (aka Jupiter) = Mark. Actor Mark, to be specific. Zeus is the king of the gods, the one who rules over the entire world and has domain over the sky. While it'd make sense for Mark to maybe Hephaestus to complete our affair metaphor from earlier, Hephaestus doesn't correspond to any planets the way Zeus/Jupiter does. Plus, this whole world is technically Actor Mark's domain, his world of stories, so of course he's representing himself by the most powerful God in the pantheon, right? Well, almost.
Kronos (aka Saturn) is not a god, he's a Titan. Specifically, the titan of Time. What character could that relate to? Well, that's harder to pin down. It could be the wkm House specifically, or whatever Entity resides in the house. We know that in that place, things like death, space, and time do not mean the same things that they do in the rest of the world, and Mark has said in the past that both literally and diagetically, all the stories he's telling post-Damien are stories that take place Inside the House, which is both a metaphor for our IRL Mark's imagination and Textually Fueled by Actor Mark's imagination.
Kronos could also be Lady, as she is something of a Keeper of Timelines for the U.S.A., and does a fair amount of universe hopping and time traveling herself in ISWM.
Either way, all this leaves one very important character Left.
Ouranos (aka Uranus). Ouranos is not a god either, nor is he a Titan. He's a primordial, something that came before all the others, and he both represents and is literally the sky. What character could be represented by such an old and powerful being? Well, I think....it's Us. The Captain. The District Attorney. Y/N. Whatever you want to call them, the Viewer is a character in this universe, and it's important to never forget that. And not only are we a character, but we're a character who is technically above every other character in terms of power, in that we are outside of the narrative entirely, just like Ouranos is outside of the structure of the rest of the pantheon. (really there are two versions of the Viewer, the in-universe version and Us, the outside-the-universe version...I don't think the in-universe version is more powerful than someo the others, but WE outside the universe, We Are, because we know things they can't ever hope to.)
All of this is just speculation, of course, but if the Gods/Planets do line up with characters, I think these are pretty good bets for who those characters could be. As for the message of the code: "Seven Gods Align. The Lock Hides in Time. A key Formed from their union."
I believe that this is a clue to or foreshadowing of the plot of the continuation of Space. "Seven Gods Align" either refers to an aligning of those seven planets Or to those seven characters/forces in the story coming to work together. "The Lock Hides in Time" is vague, and I'm sure we'll get more context in subsequent code/theory/lore drops (I am 100% sure we will get more videos like Error in the other Mondays leading up to Part 2's release), but I think this refers to Something or Someone that, if we can reach it, will allow us to repair the broken universe in Space or maybe repair the situation with the House in the overall Markiplier Cinematic Universe (my money's on the broken universe though). And "A Key Formed from their union" could again refer to several things. Perhaps the planets aligning, perhaps the group of everyone working together, or maybe "union" refers to only two people. Celine and Damien as Dark, Celine and Mark's marriage or Celine and Will's affair, or maybe even Y/N's warp crystal and Lady's warp crystal joining together. It's hard to say at this point, but I'm sure we'll find out more as time goes on and Mark tortures us more and more with subsequent lore drops. Happy theorizing, everyone!