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One of Earth’s deepest mysteries lies beneath our feet: the planet’s inner core. Made of iron and nickel, the hot, solid sphere is about 70% the size of the moon.
This image shows magnetic declination, or the angle between magnetic and geographic north, according to the World Magnetic Model released in 2025. Red is magnetic north to the east of geographic ...
The rotation axis of Earth is centered and vertical. The dense clusters of lines are within Earth's core. [2] Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.
NBC Nightly News title card, used from 1972 to 1975. NBC Nightly News replaced The Huntley–Brinkley Report on August 3, 1970 upon Chet Huntley's retirement. At first, David Brinkley, John Chancellor, and Frank McGee rotated duties as anchors. At least one, usually two, and very rarely all three anchored the program on a given night.
Earth’s outer core is made up of mostly molten iron, a liquid metal. Unpredictable changes in the way it flows cause the magnetic field around the Earth to shift, which then causes the magnetic ...
The intersection between the magnetic and rotation axes of the Earth is located not at the Earth's center, but some 450 to 500 km (280 to 310 mi) away. Because of this asymmetry, the inner Van Allen belt is closest to the Earth's surface over the south Atlantic Ocean where it dips down to 200 km (120 mi) in altitude, and farthest from the Earth ...
The NBC News Division was the first news team to possess the tape of Donald Trump recorded by Access Hollywood, after a producer of the NBC show had made the News Division aware of it; the News Division internally debated publishing it for three days, and then an unidentified source gave a copy of the tape to The Washington Post Reporter David ...
And that’s with Earth’s magnetic field at its current strength. It's frightening to imagine the devastation a storm would bring to an Earth with a magnetic field only 10% as strong.