Deep within the Earth, a solid metal ball spins independently of our spinning planet, like a top spinning inside a larger top, shrouded in mystery. Since its discovery by Danish seismologist Inge Lehmann in 1936, this inner core has fascinated researchers. Its motion—including its speed and direction of rotation—has been the subject of decades-long debate. … Read more
The depth and inaccessibility of the inner core means that uncertainties remain. Deep within the Earth, a solid metal ball spins independently of our spinning planet, like a top spinning inside a larger top, shrouded in mystery. Since its discovery by Danish seismologist Inge Lehmann in 1936, this inner core has fascinated researchers. Its motion—including … Read more
As the moon orbits the Earth, the Earth orbits the sun, and the sun orbits the center of the Milky Way, moving up and down with respect to the galactic plane. A new study has suggested that this movement of our star through the Milky Way may be taking us through regions of space that … Read more