Space Siren

Space Sirens are large exotic crystalline structures that are found orbiting high mass Population I stars. They can be made up of any kind of element, hence their color varies. These structures are also extremely dangerous for pilots that happen to come too close.

Internal Structure
Some Space Sirens were discovered with large sharp extrusions coming from the surface. There are also large crystal "windows" that refract starlight from the host star, making the rock, from a distance, seem like it is glowing or sparkling. Almost all discovered Space Sirens produce a weak magnetic field, most likely because of iron deposits at the core.

Risk
Space sirens are one of the most dangerous objects found in deep space. Let's start off with why they are called Space Sirens: Not only do they sparkle, they also emanate a low humming noise that is within the range of human hearing, but is silent because there is no air. Instead, vibrations are felt when nearby. Also, when one is approached too closely (as the first mining ship that discovered Space Sirens did), the rock violently exploded, shredding most of the hull off of the mining ship. No scientific explanation has been found as to why it does this. So it is highly advised that pilots stay away from these rocks.

Location
There are no Space Sirens known to exist within some 860. The closest star that these were found orbiting was Rigel.