A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than the hypothesized Planet Nine. According to a new measurement of the Kuiper Belt plane – the vast ring of icy worlds wherein Pluto resides – an unexpected 15-degree tilt in the orbital alignment of some objects …
Read More »A Hidden Earth-Size World Could Lurk Far Closer Than ‘Planet Nine’
