A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return. The hole is called "black" because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics. Quantum field theory in curved spacetime predicts that event horizons emit radiation like a black body with a finite temperature. This temperature is inversely proportional to the mass of the black hole, making it difficult to observe this radiation for black holes of stellar mass or greater.
Blck Holes are of great interest to Union science. The Supermassive Black Hole at the Center of the Milky way galaxy is subject of several Research projects.
Classified : The OMEGA ANSWER of SII is a fast moving Black Hole. The weapon is still in development but SII Scientists believe they have a working "OMEGA ANSWER" aboard the SII - TERMINUS. This is known to less than an handful people. SII scientists predict that the Black Hole becomes a Galaxy Killer and is unstoppable once deployed.
The United Stars Space Force is working on a similar project.