So you're appropriately warned? Fine, let's move on...
I'm just playing as the Phidi Combine and I captured myself a beautiful (though slightly used ) superdreadnought in the Ephelos system.
Afterwards I founded a new colony on Ephelos II (the one with the remains of an ancient colony and still functional androids).
I was informed about some new technologys that my people found on Ephelos II and I almost overread that the game was telling me about "Ancient Human Archives". Human? Hmm... so this was a human settlement once. So is that Superdreadnought in orbit also... wait... WAIT! IS THAT SOL I'M LOOKING AT???
"What is that guy talking about?" you might think now. But just have a look at the Ephelos system yourself. I'm pretty sure it's in every game and it always looks the same:
Ephelos - Yellow Star - this might be our precious Sun.
Ephelos I - Medium Inferno World - this could be Venus
Ephelos II - Medium Glacier World - this could be Earth (it has artifacts and is mineral poor, so I guess this would fit)
Ephelos III - Small Arid World - this could be Mars
Ephelos IV - Gas Giant - doesn't this thing yell "Jupiter" at you?
"But our solar system contains more than 4 planets", you might think now. But here's how I see it: the engine of SiS only allows up to 4 planets per star system. Many stars out there might have more than 4 planets (MUCH more actually), so I would interpret this as a closeup look on the stars habitable zone (or whatever comes next to this). That would mean, the other planets are still there, the game is just not displaying them.
But wait, why would our Earth be a glacier world? Has global warming finally caused another iceage? Was Roland Emmerich's "The Day After Tomorrow" actually accurate? Well... maybe. But maybe the answer to this question is even more interesting:
Some time ago (2017) there was a discussion on this forum, about the games lore, including some interesting speculations about what might have happend to Earth. Some people had some nice ideas of how Earth was devastated during the Great War and that, if it ever appears in the game, it should be covered in craters, caused by massive orbital bombardment.
Now let's think about, what thermo nuclear weapons would actually do to our planet. Did you ever hear of a so called "Nuclear Winter"? If not, you can google it...
So Earth might indeed been devastated during the Great War. And a severe orbital bombardment left it as a scorched world, covered by vast glaciers, due to a global scale nuclear winter. If this is actually the case, it would've been an ingenious idea! We all actually found Earth! Many times even! And we didn't even notice it, since the well known coastlines of our homeworld are covered by ice and are therefore invisible.
What a great idea!
Finally I like to quote the mentioned discussion:
Arioch wrote:Or, it could be "lost" in another sense. If Sol still existed, but the star charts didn't identify the system as "Sol", and there was no current human habitation there, would you know it if you saw it?
I think I know what you hinted here. And to answer your question: Yupp! I totally did!