Picture 1 Kimmo Huosionmaa In the universe is a star, so weird that it can almost make black holes look like boring. This star is so-called “grey hole” or quark star, what is the end of life of the star, what is too heavy to become the neutron star but too light to become a neutron star, when the nuclear reactions inside the star have been ended. In this star type the neutrons were crushed as the quarks, but the gravity is not strong enough to make the black hole. The photons can escape from this tiny piece surface, but the escaping speed is near the speed of the light, and that slows the photons very much. This kind of star is smaller than the neutron star, and its gravity is more massive than neutron stars ever have. Those quark stars might look like small asteroids, and in some science fiction scenes, the spacecraft will make mistake and lands on that little star, what is mistakenly thought as the asteroid. The massive gravitation on that small star surface makes that obje...