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The long, trailing limb of the earth's magnetosphere on the side facing away from the sun.

References in periodicals archive ?
Summary: TEHRAN (FNA)- Researchers have captured a difficult-to-view singular event involving 'magnetic reconnection' -- the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion -- in the Earth's magnetotail, the magnetic environment that trails behind the planet.
There is nothing unique about a planet having a magnetic tail, but the properties of the magnetotail trailing behind Mars make it unique in the solar system.
Geomagnetic substorms involve the storage and release of energy in the Earth's magnetotail. The mechanism of energy release is still debated and typically involves a trigger mechanism.
They found that the planet is composed mostly of liquid, and that it has a magnetotail, an extension of its magnetic field, like Earth.
Just like comets, planets such as Saturn and the Earth have a "tail"-known as the magnetotail - that is made up of electrified gas from the Sun and flows out in the planet's wake.
Most of the large and small features of substorms take place largely in the portion of Earth's magnetic environment called the magnetotail. Earth sits inside a large magnetic bubble called the magnetosphere.
After a memoir and an obituary, they consider thermonuclear carbon burning in the hydrodynamic model taking account of pre-supernova evolution and convection, the formation and evolution of the current sheet for driven magnetic reconnection field lines on plasma, dynamic current sheets in the earth's magnetotail, and Syrovatskii and the development of current sheet research.
Consequently, the magnetosphere stretched out into a long and variable comet-like tail called a magnetotail, which gradually tapered away as it moved away from the planet.
Specific topics include narrow plasmas streams as a candidate to populate the inner magnetosphere, quick response of the near-earth magnetotail to changes in the interplanetary magnetic field, energetic electron response to magnetic storms, experimental data on the dynamics of the earth's radiation belt, injection of energetic ions during substorms, substorm associated spikes in high energy particle precipitation, and ring current behavior as revealed by energetic proton precipitation.
The magnetotail of the drop stretches in the direction opposite from the sun, actually reaching beyond the lunar orbit.