According to prominent theory, our Milky Way should be surrounded by a large halo of Dark Matter that’s only detectable by its gravitational influence on normal matter that can be seen. But the most accurate study yet of objects in motion can find no evidence whatsoever of Dark Matter anywhere around our Solar System. In fact all attempts to find actual Dark Matter have come up dry. Yet the rotation of galaxies like ours and the current theories of how they formed seem to demand that up to 80% of the Universe must be made of Dark Matter. But those assumptions are now in question. This is SPACE.com