Fractus

"++BEGIN VOX-RECORDING: LOG #3421.29++ ...Omnissiah be praised, we have breached the outer Dust Cloud with little to no damage sustained to our vessel. Now in orbit of the "Sundered World", I can see now how accurate this title is. The planet has been broken, nearly half it's landmass fragmented, and yet the planet still maintains a gravitational pull, something that should be physically impossible at this stage of a planet's destruction. Curious, very curious. I must journey to the surface if I wish to discover more. Ave Deus Mechanicus... ++END VOX-RECORDING++"

- Last Known Vox-Recording of Explorator Darmas Telek (Fate Unknown)

The Dead World of Fractus, also known as the Sundered World, is perhaps one of the greatest mysteries of the Sephadollion Sector. Located in the farthest reaches of the Donek Sub-Sector, Fractus is unique due to the fact that the planet itself is broken, the planet's entire west hemisphere having disintegrated, the planet's core and molten mantle long since having solidified and fused with the crust, yet somehow it maintains a gravitational pull. In fact, the gravity on Fractus fluctuates so erratically that not only is it surrounded by it's own asteroid field, but pieces of it's own land mass continually crash into the planet's surface or break off to form a new part of the asteroid field known as the Dust Cloud. Such an inhospitable world would normally be ignored by the Imperium, if rumors of hidden Archotech did not attract dozens of Mechanicus Explorators, most of which perish in gravity wells or are crush by the asteroids that constantly bombard the Sundered World.