Two new studies have provided further evidence for the existence of an as-of-yet undiscovered large planet at the edge of the Solar System, known by the astronomical community as “Planet Nine“. Having found that the orbits of a number of trans-Neptunian objects (TNOs) on the outer fringe of the Solar
Dark matter: all mass and no substance, this theoretical type of matter is used by physicists to explain why the universe acts as if it has five times more mass than we can see–basically if galaxies only had the mass that is represented by the visible matter in them, the strain that their rate of spin puts on them would cause them to fly apart. And this strange, invisible substance that doesn’t seem to interact at all with ordinary matter should be distributed as evenly as the rest of the matter in the universe… except that astronomers have recently found a galaxy that contains no dark matter at all, demonstrating that its theoretical presence isn’t as ubiquitous as we thought.
A new analysis of a small rock called the Hypatia Stone, presumed to be a fragment from a comet, reveals that it might either be from outside the Solar System, or older than the Sun itself.
Discovered in 1996 in the same region of the Eastern Sahara as the odd phenomenon known as Libyan Desert glass, a 2013 analysis of the Hypatia Stone discovered that it was of extraterrestrial origin, and was hypothesized to be a fragment of a cometary nucleus. However, a new analysis has found that the stone’s odd atomic composition doesn’t even match any known meteorite samples, implying that it is either from outside the Solar System, or it predates the formation of the Solar System itself.