Articles tagged "ace spacecraft"

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New solar phenomenon discovered: large-scale waves accompanied by particles emissions rich in helium-3

Joint US and German research teams have discovered a new form of solar ejection involving high energy blast waves and helium-3 based particle matter. The discovery was aided by NASA spacecraft STEREO A and ACE. A new solar phenomenon has been discovered by two...

October 16, 2015

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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

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Geomagnetic storm subsiding, expecting more CMEs

The first of several CMEs en route to Earth struck our planet's magnetic field on Sept. 9th around 1130UT. The impact sparked a strong (Kp=7) geomagnetic storm, which is now subsiding. Last night Northern Lights were spotted in the United States as far south

September 10, 2011

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One of the strongest geomagnetic storms in years subsiding

Earth's magnetic field is still reverberating from a CME strike on August 5th that sparked one of the strongest geomagnetic storms in years. Registering 8 on the 0 to 9 "K-index" scale of magnetic disturbances, the storm, at its maximum, sparked...

August 06, 2011

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Geomagnetic storm still in progress but lingering

A geomagnetic storm is in progress. It began on August 5th around 18:00 UT when a CME struck Earth's magnetic field. At its peak during the hours just after impact, the storm registered 8 on the 0 to 9 "K-index" scale of geomagnetic disturbances,...

August 06, 2011

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A sharp gust of solar wind hit Earth's magnetic field

A sharp gust of solar wind hit Earth's magnetic field at approximately 20:30 UTC on June 4, 2011. High-latitude sky watchers in both hemispheres should be alert for auroras. Solar windspeed: 495.9 km/secdensity: 2.6 protons/cm3 Planetary K-indexNow: Kp= 5...

June 04, 2011