article_snippet: Crucially, though, dwarf galaxies orbiting the Milky Way - an unprecedented nine in total could help test theories of dark matter and perhaps bring us a step closer to detecting the elusive particles.
article_snippet: Importantly, though, Dwarf galaxies are thought to contain 99 per cent dark matter and just one per cent observable matter.
article_snippet: This means Dwarf galaxies should be useful to test cosmological theories of dark matter, which makes up 25 per cent of all matter in the universe but is yet to be detected.
article_snippet: Dwarf satellites are the final frontier for testing our theories of dark matter,’ said Dr Vasily Belokurov of the Institute of Astronomy, one of the study’s co-authors.
article_snippet: We need to find them to determine whether We cosmological picture makes sense.
article_snippet: ‘Dwarf satellites are the final frontier for testing our theories of dark matter,’ said Dr Vasily Belokurov of the Institute of Astronomy, one of the study’s co-authors.
article_snippet: If physicists only take visible matter into account, physicists equations simply don't add up; the elements that can be observed are not sufficient to explain the rotation of objects and the existing gravitational forces.
article_snippet: From this physicists deduced that there must be an invisible kind of matter that does not interact with light but does, as a whole, interact by means of the gravitational force.
article_snippet: Called 'dark matter', this substance appears to make up at least 25 per cent of the matter in the known universe.
highlights_snippet: But they are thought to be 99% dark matter - which could help confirm theories of its presence in the cosmos .