Black Curtain

Appearance and position
The Black Curtain is the name given by the astronomist Emeth Jacostia to the dark toned asteroid belt that orbits around Isträ, between the planets Orak and Sibli. It is composed of a wide amount of asteroids composed of burnt rock and glass. It is believed that this belt comes from the collision of a massive asteroid and Isträ, its magnetic field having probably deviated and shattered the asteroid to pieces, which drifted for a moment until it started orbiting around the sun.

Origin of the name
The asteroid belt was not directly named by Emeth Jacostia, as he named the rest of the planets he discovered. It was originally the nickname he gave to the asteroid belt he theorized about in his book Studies on our sun and our system, having evoked in this book a "possible asteroid belt of black rocks that would block our vision of what ever exists beyond it in the orbit of our sun, a black curtain that would entrave our discoveries". Later, the name was kept and used again, naturally becoming the name of the asteroid belt.

Issues in Astronomy and common life
This Black Belt is visible from Themeris as a black stripe of nothingness in the star sky, at night. Using a telescope, it appears as blocking one's view on a certain angle, making it impossible most of the time to see any planet behind it, which is why the planets Sibli, Isaka and Esko were hidden for so long. Despite being the most far away planet of all, Esko was actually the first discovered by Emeth Jacostia and considered as an actual planet rather than a star, at its trajectory makes it regularly visible between the numerous rocks that form the asteroid belt.