The farthest star from the sun, the identity of the mysterious "Sedna" where exactly from?
As we all know, there are 8 planets in our solar system, but before 2006, Pluto was also one of the big planets in our solar system, but, because scientists discovered another object called "Sedna" at the edge of our solar system in 2003, it was judged by many scientists to be a dwarf planet, but Sedna is much bigger than Pluto. This makes the real identity of Pluto once again suffer from questioning, finally in 2006 was dismissed by scientists, the real identity also from a large planet relegated to a dwarf planet. So, what is the origin of Sedna that made Pluto expelled?
