Half way into the war, in 2050, a very faint signal was detected coming from a distant asteroid, beyond the orbit of Jupiter. This nameless rock, HPL18901937 was at the time the farthest object on any interest in the System, and access to it was difficult.
A mad race started, mirroring the space race of the 1960s.
After sabotage, set-backs and back stabbing, the five major Corps, Koruachi Corps, Everleaf Group, MegaGen, Eclipse Inc and Schatten Korp arrived within a week of each other. And after some space battling, leading to a number of deaths, they decided to end the stalemate and find the source of the signal together.
They found an obelisk. It had clearly not be made by man. And it was old. The type of old that is cold to the touch, even at absolute zero.
After 2 weeks of research, the obelisk was just that, an engraved, vaguely glowing carved rock. As interesting as a possible clue to alien intelligence might be, there was a war on.
The researchers came back to Earth, vowing to return one day.
They haven't yet.
Also, they didn't take anything with them.
And weren't changed in any way.