Mystery

Putative Forerunner home system in Quadrant 0

The inhabitable planet of the system, Mystery-C remained unexplored for many centuries largely because it was orbiting a large star with a deep gravity well. Earlier survey and exploration records had been lost due to administrative error, so it came as something of a shock when the vast and extensive Forerunner ruins on the planet were discovered accidentally in 3211 following a investigation by a group of Martian government scientists.

A massive international archeological exploration commenced shoretly after, coordinated by the International Forerunner Foundation. It was said that during its peak the number of archeologists and support staff numbered over 1 million. It was said th every Forerunner expert in human space was on Mystery for several years - so much so that Forerunner research and archological digs effectively came to a halt everywhere else.

The investigations were briefly hampered by a short military stand-off, and again later by the destruction of a functioning Forerunner computer in one of the system's asteroids.

Most notable site on the planet was the giant Pyrimid of Mystery, remarkably similar to the Great Pyrimid of Cheops on Earth, but 3.14 times larger and the undereas 'city' of New Atlantis which contained an alleged Forerunner Time Machine and, most remarkably, a tethered singularity.

The entire system was destroyed when the tethered singularity imploded on itself in 3221. No archeologists were harmed as the system was evacuated shortly before.