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 ...

In a nutshell Scientists discovered that lightning on Earth can knock high-energy electrons out of the inner radiation belt, sending them cascading into the atmosphere in a phenomenon called lightning ...

Reader Jayant Bhalerao, a college physics instructor, found the story useful in class: “We will share it with our students, so that they can appreciate how ...

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 ...

A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and ...

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 ...

Now, though, a controversial new paper warns that falling space junk could actually weaken Earth’s magnetic field. If that happens ... and all around it might not be a great thing.