When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram ... and generators to operate. In the Earth (see image below right), the liquid metal ...

As well as a few temporary reversals, the Earth's ... that the magnetic field briefly flipped during this time period. "The field geometry of reversed polarity, with field lines pointing into ...

Explaining the science behind the northern lights, and why 2025 could bring more opportunities to see them. #ExtremeNature ...

Related: Earth got hammered by cosmic rays 41,000 years ago due to a weak magnetic field The existence of a magnetic field is crucial for the development of life on Earth, with field lines warding ...

Since its launch on March 12, 2015, NASA’s MMS, or Magnetospheric Multiscale, mission has been rewriting our understanding of magnetic reconnection, a key physical process that is important across the ...

The planet's magnetic North Pole ... ball of molten iron going around in the middle of the earth that generates the magnitude," William Brown, a geomagnetic field modeler at the BGS, said to ...

The Analyzer for Cusp Electrons (ACE) is designed to measure electron activity in the region of the northern magnetospheric ...

Most of the time, the Earth and Sun’s magnetic fields are misaligned, leaving our planet’s field less open to the aurora-causing effects of the solar wind. However, towards the equinox, the two fields ...

Some animals that migrate across the globe, such as birds, salmon, lobsters and sea turtles, are known to navigate using the magnetic field lines that stretch from Earth's North to South ... they ...

High above Earth's poles ... However, the electrojets create a magnetic field that can split apart that 118 gigahertz emission line in a process called Zeeman splitting. The stronger the magnetic ...