Near Miss The Solar Superstorm Of July 2012

Near Miss: The Solar Superstorm Of July 2012

Dr. Tony Phillips, Science@NASA If an asteroid big enough to knock modern civilization back to the 18th century appeared out of deep space and buzzed the Earth-Moon system, the near-miss would be instant worldwide headline news. Two years...

Latest Geomagnetism Stories

Van Allen Probes
2014-07-16 10:35:28

Karen C. Fox, NASA's Goddard Space Flight Center One of the great, unanswered questions for space weather scientists is just what creates two gigantic donuts of radiation surrounding Earth, called the Van Allen radiation belts. Recent data from the Van Allen Probes -- two nearly identical spacecraft that launched in 2012 -- address this question. The inner Van Allen radiation belt is fairly stable, but the outer one changes shape, size and composition in ways that scientists don't yet...

Monarch Butterflies Rely In Part On Magnetic Compass For Navigation
2014-06-25 07:52:07

April Flowers for redOrbit.com - Your Universe Online Mass migrations have puzzled scientists for decades, and perhaps none more so than the North American monarch butterfly. Each fall, millions of the beautiful orange and black winged insects begin their journey from the eastern US and Canada. They travel over 2,000 miles to winter in specific groves of fir trees in the Michoacan Mountains in central Mexico, where they crowd together so densely that the air is filled with butterflies,...

solar mini-max
2014-06-11 11:02:39

Brett Smith for redOrbit.com - Your Universe Online Our Sun is constantly cycling between periods of low activity and high activity – known as solar minimum and solar maximum, or Solar Max, respectively. In 2008 and 2009, NASA’s solar experts reported they were surprised to see the Sun descend into one of its deepest solar minimums in recorded history. But now, NASA observers are saying that the solar minimum is almost over. [ Watch the Video: ScienceCasts: Solar Mini-Max ]...

MMS To Study Secrets Of Magnetic Reconnection
2014-05-16 03:36:18

Susan Hendrix, NASA In March 2015, NASA will launch four identical spacecraft to study how magnetic fields around Earth connect and disconnect, explosively releasing energy – a process known as magnetic reconnection. The Magnetospheric Multiscale, or MMS, mission will provide the first three-dimensional views of this fundamental process that can accelerate particles to nearly the speed of light. MMS uses Earth’s protective magnetic space environment, the magnetosphere, as a natural...

Cluster Helps To Model The Mysterious Magnetosphere Of Earth
2014-05-09 03:10:38

ESA For many years, scientists have been striving to understand the constantly changing structure and behavior of the huge magnetic bubble that surrounds our planet. One approach – pioneered by Russian scientist Nikolai Tsyganenko - has been to develop models based on data sent back by spacecraft, such as ESA's Cluster quartet. As Earth sweeps around the Sun, it is constantly bombarded by energetic particles from solar storms and deep space. Fortunately, the planet generates a...

Swarm Satellites Precise Sense Of Magnetism
2014-05-08 03:26:09

ESA Although they were launched only five months ago, ESA’s trio of Swarm satellites are already delivering results with a precision that took earlier missions 10 years to achieve. Engineers have spent the last five months commissioning the identical satellites and carefully guiding them into their orbits to provide the crucial measurements that will unravel the mysteries of Earth’s magnetic field. Swarm has a challenging task ahead. Together, the satellites will measure and...

Intense Solar Storm Narrowly Misses Earth
2014-05-02 15:33:50

[ Watch The Video: ScienceCasts: Carrington-Class CME Narrowly Misses Earth ] Science@NASA Last month (April 8-11), scientists, government officials, emergency planners and others converged on Boulder, Colorado, for NOAA's Space Weather Workshop—an annual gathering to discuss the perils and probabilities of solar storms. The current solar cycle is weaker than usual, so you might expect a correspondingly low-key meeting. On the contrary, the halls and meeting rooms were abuzz...

Space Weather Tracking From The Ground
2014-04-24 06:22:48

April Flowers for redOrbit.com - Your Universe Online How do you measure the effects of space weather on Earth-bound electronics? According to NASA heliophysicist Antti Pulkkinen, with high-voltage power transmission lines and iPads. Pulkkinen, of NASA's Goddard Flight Center, is launching a one-to-two year pilot project this summer by installing scientific substations beneath high-voltage power transmission lines operated by Virginia's Dominion Virginia Power. These substations will...

radiation belts
2014-03-20 04:40:46

[ Watch the Video: Van Allen Probes See Zebra Stripes ] redOrbit Staff & Wire Reports - Your Universe Online Data from NASA’s twin Van Allen Probes has led to the discovery of a new, potentially dangerous zebra-striped structure located in Earth’s inner radiation belt, according to new research appearing in Wednesday’s edition of the journal Nature. In the paper, lead author Aleksandr Ukhorskiy of the Johns Hopkins Applied Physics Laboratory (APL) and his colleagues explain...

2014-03-19 23:00:59

An NJIT physicist is a collaborator in the discovery of a new structure in Earth’s inner radiation belt -- a zebra-striped structure of highly energized electrons that could endanger humans in space and also damage low-earth navigation and communication satellites. Newark, NJ (PRWEB) March 19, 2014 An NJIT physicist is a collaborator in the discovery of a new structure in Earth’s inner radiation belt -- a zebra-striped structure of highly energized electrons that could endanger humans...

Latest Geomagnetism Reference Libraries

2010-10-21 16:58:49

The compass is a tool that helps the user navigate using the Earth's magnetic poles by using a magnetized pointer that reacts to magnetic fields. Since a compass can be used to calculate a heading it quickly improved the safety and efficiency of travel, especially ocean travel. It has only recently been replaced by Global Positioning Systems. It works by indicating the direction of the magnetic north of a planet's magnetosphere. Generally the face of a compass highlights the north, south,...

Ring Current
2004-10-19 04:45:44

Ring Current -- A ring current is an electric current carried by charged particles trapped in a planet's magnetosphere. It is caused by the longitudinal drift of energetic (10-200 keV) particles. Earth's Ring Current Earth's ring current is responsible for geomagnetic storms. The ring current system consists of a band, at a distance of 3-5 RE(1), which lies in the equatorial plane and circulates clockwise around the Earth (when viewed from the north). The particles of this region...

2004-10-19 04:45:41

Van Allen Radiation Belt -- The Van Allen radiation belt is a torus of energetic charged particles around Earth, trapped by Earth's magnetic field. The presence of a radiation belt had been theorized prior to the Space Age and the belt's presence was confirmed by the Explorer I on January 31, 1958 and Explorer III missions, under Doctor James Van Allen. The trapped radiation was first mapped out by Explorer IV and Pioneer III. Qualitatively, it is useful to view this belt as consisting...

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Word of the Day
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'