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More than half a billion years ago, Earth experienced a near-complete collapse of its magnetic field. It begins in the early Cambrian period. Then, after a period of about 15 million years, the field began to grow again. The cause of the collapse and the reflection of the field is a mystery. Then, a group of geologists studied the rocks from Oklahoma that formed during that time. Magnetic markers in rock minerals point to events that began about 550 million years ago. That was before multicellular life was introduced on our planet. Look Deep Into The Core To understand what’s going on, look at the structure of our planet. Most of us learned in school that the Earth is made up of layers. There’s a crust, where you’re sitting reading this now. Beneath it is the mantle, the thickest layer of the earth. It lies above the molten outer core, which surrounds the solid inner core. The inner core has two parts—the outermost inner core and the innermost core. The core region lies abo

Deep in the Milky Way, roughly 22,000 light-years from Earth, a star unlike any other roars with a magnetic force that beats anything physicists have ever seen. With 1.6 billion Tesla, a pulsar called Swift J0243.6+6124 broke the previous record of around 1 billion Tesla, found in the vicinity of pulsars GRO J1008-57 and 1A 0535+262. For a little context, your average new fridge magnet comes in at around 0.001 Tesla. More powerful MRI machines manage to reach around 3 Tesla. A few years ago, engineers were credited with hitting the semi-respectable 1,200 Tesla, keeping it in a flash of just 100 microseconds. So it makes sense that 1.6 billion Tesla would demand some truly amazing physics. The kind that can only be achieved by massive objects crammed into impossible volumes and spinning at incredible speeds, fast enough to accelerate electrons to ridiculous speeds. Swift J0243.6+6124 is already considered a noteworthy star. A type of super-compact cosmic heavyweight known as a pulsar