And the sun is a star that gives out heat and light. The sun is at the centre of the solar system. The solar system is the name we use to describe the eight planets, and their moons, that circle ...

Like bright comets, dark comets follow elongated, elliptical paths that bring them close to the sun before sweeping back out to the farthest reaches of the solar system. They go beyond Pluto ...

Like bright comets, dark comets follow elongated, elliptical paths that bring them close to the Sun before sweeping back out to the farthest reaches of the Solar System. They go beyond Pluto ...