Articles tagged "magnetosphere"

magnetosphere

Two-step energy transfer in Earth's magnetosphere

Scientists have obtained in situ measurements of Earth's magnetosphere, demonstrating a phenomenon that's long been thought to happen but not yet directly been shown: energy is transferred from hydrogen ions to plasma waves, and then from the waves to helium...

September 06, 2018

geomagnetic storm

Plasma space tornadoes let high-energy particles into near-Earth space

Researchers using NASA's Magnetospheric Multiscale mission (MMS) discovered tornado-like swirls of plasma create a magnetosphere tumultuous enough to let harmful high-energy particles from the Sun slip into near-Earth space. The discovery is important for...

November 23, 2017

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Earth's magnetic field showing signs of significant weakening

​The first set of high-resolution results from ESA’s three-satellite Swarm constellation reveals the most recent changes in the magnetic field that protects us from cosmic radiation and charged particles that bombard Earth. Magnetic field is in a permanent...

June 19, 2014

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Three-satellite Swarm constellation launched to study Earth's magnetic field

ESA’s three-satellite "Swarm" constellation was launched into a near-polar orbit by a Russian Rockot launcher on November 22, 2013. In next four years, Swarm satellites will monitor Earth’s magnetic field, from the depth of our

November 22, 2013

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Six years of observing the Earth's magnetosphere

There is still only a handful of spacecraft to watch for solar and magnetic storms but the number of observatories has been growing over the last six years. Today, these spacecraft have begun to provide the first multipoint measurements to better understand space

September 27, 2013

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Earth’s magnetosphere behaves like a sieve

ESA’s quartet of satellites studying Earth’s magnetosphere, Cluster, has discovered that our protective magnetic bubble lets the solar wind in under a wider range of conditions than previously believed.Earth’s magnetic field is our planet’s first line of

October 27, 2012

dynearth

Dynamic Earth - watch how solar storms affect our planetary system

The dramatic science behind the Sun’s powerful coronal mass ejections and their interactions with the Earth’s magnetosphere and climate is now can be viewed now in this newly released video from NASA. In this animation, you can watch as the particles from the solar

June 21, 2012

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Crack that opened in Earth's magnetic field on Feb 15th still a puzzle to scientists

On February 10th there was filament eruption in the northern hemisphere that produced CME which traveled few days before reaching our magnetosphere on February 14. As magnetic disturbance rippled around the Arctic circle on February 14th, it opened a crack in our

February 17, 2012

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Strong solar activity causing severe geomagnetic storm

High-latitude sky watchers should be alert for auroras. A strong (Kp=7) geomagnetic storm is in progress. Earth's magnetic field has been strongly disturbed since approximately 1300 UT on Sept. 26th when a CME hit our planet. The impact strongly compressed the

September 26, 2011

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Geomagnetic storm in progress

As predicted by analysts at the Goddard Space Weather Lab, a coronal mass ejection (CME) hit Earth's magnetic field at ~03:30 UT on Sept 17th. The impact sparked a moderate geomagnetic storm (in progress) and auroras around the Arctic Circle. High-latitude sky watch

September 17, 2011