Latest Plasma physics Stories

NASA’s IRIS Solar Mission Launch Moved To Thursday
2013-06-25 03:10:20

[ Watch the video IRIS Science Overview ] Lee Rannals for redOrbit.com - Your Universe Online Update (June 25, 2013 3:10 p.m.) NASA announced on Tuesday that its planned launch for its Interface Region Imaging Spectrograph (IRIS) mission has been moved due to the "recent central California power outage." The launch window has moved from Wednesday, June 26 to Thursday, June 27. Stay tuned for further updates. Main Story (June 24, 2013 12:43 p.m.) NASA's Interface...

Sounding Rockets Will Help NASA Study Earth's Ionosphere
2013-06-21 13:42:41

Brett Smith for redOrbit.com - Your Universe Online Way up in the Earth’s atmosphere is a layer of charged particles called the ionosphere, which plays a crucial role in the transmission of radio and other signals. Through a mission called Dynamo, NASA scientists are planning to study the currents that pass through this charged section of the atmosphere found between 30 and 600 miles above Earth. Launching from NASA’s Wallops Flight Facility in Virginia, Dynamo is expected to take a...

Suck It Up! Sun Provides Insight Into How Young Stars Grow
2013-06-21 04:26:50

April Flowers for redOrbit.com - Your Universe Online Our Sun erupted on June 7, 2011, sending tons of hot plasma blasting into space. Some of the plasma fell back to the surface of the Sun, sparking bright flashes of ultraviolet light. A new study from the Harvard-Smithsonian Center for Astrophysics (CfA) examines the dramatic event to provide new insights into how young stars grow by consuming nearby gas. NASA's Solar Dynamics Observatory captured the eruption and subsequent...

NuSTAR Observatory Busy High Energy Events
2013-06-18 11:08:53

Brett Smith for redOrbit.com - Your Universe Online NASA´s NuSTAR orbiting observatory is designed to investigate high-energy events throughout the universe, and the cosmos has been keeping it busy in recent months, producing one event after another. In early April, the galaxy Markarian 421 produced a high-energy event that increased its brightness by more than 50 times its usual level. Markarian 421 is known as a blazer, a unique class of galaxies with supermassive "feeding" black...

Black Hole X Ray Mystery Solved
2013-06-14 14:00:15

Lee Rannals for redOrbit.com - Your Universe Online Astronomers from several institutions have confirmed theories about how stellar-mass black holes produce their highest-energy light known as hard X-rays. Researchers from NASA, Johns Hopkins University and the Rochester Institute of Technology wrote in the Astrophysical Journal about how they were able to use supercomputer simulations of gas flowing into a back hole to reproduce a range of important X-ray features found in active black...

Nearby Flare Star Gives Burst Of Light
2013-06-14 12:17:36

Brett Smith for redOrbit.com - Your Universe Online Within a span of three minutes, a star in the Usra Major constellation less than 16 light-years from Earth gave off a massive flare, making the object 15 times brighter than normal, according to a new report in the journal Astrophysics. The star, known as WX“¯UMa, is a so-called flare star, a class of stars which can become 100 times or more brighter within a few seconds or minutes. These flares appear to be randomly...

Sunrise 2 Launched Successfully
2013-06-12 10:28:55

Max Planck Institute for Solar System Research The balloon-borne solar observatory Sunrise has lifted off - and will now begin its unique journey to the active Sun. The balloon-borne solar observatory Sunrise has lifted off successfully from Esrange Space Center in the north of Sweden. Today at 7.37 a.m. CEST the launching vehicle released the gondola and the huge balloon lifted Sunrise into the sky. Ever since the last ground-based tests had been completed during the past week, the...

Latest Plasma physics Reference Libraries

Stellar Astrophysics
2014-01-12 00:00:00

The prominent feature that allows for the existence of life on Earth is the Sun. Radiation from our closest star provides heat and energy to our planet, driving biological processes and providing the necessary conditions for liquid water to naturally exist. But our Sun is only but one star in this vast Universe. And as it turns out, most stars are quite different than the one that illuminates our day. For this reason, scientists have, for hundreds of years, attempted to study the other...

How Solar Cycles Impact Our Weather Here On Earth
2013-01-13 09:10:34

Solar cycles: what are they and why should we care about them? Solar cycles are made up of what are known as solar minimums (min) and solar maximums (max). We refer to a solar min at the time when the sun is not active with many sunspots, while a solar max is just the opposite when we see a large increase in sunspot activity. So how long do solar cycles last? Typically they run on what is known as an 11 year cycle from the max to the min and then start over again anew. As of 2012 we...

Solar Physics
2012-05-02 19:16:53

Solar Physics is a journal for solar and solar-stellar research and the study of solar terrestrial physics. Founded in 1967 by solar physicist Cornelis de Jager and publisher D. Reidel, the journal treats all aspects of solar physics, ranging from the internal structure of the Sun and its evolution, to outer corona and solar wind in interplanetary space. Solar Physics has four more than forty years been the principal journal for publications of fundamental research on the Sun. It is...

2013-03-16 00:00:00

Hannes Olof Gösta Alfvén (May 30, 1908 - April 2, 1995) was a Swedish plasma physicist born in Norrköping, Sweden. Alfvén received his PhD from the University of Uppsala in 1934. His thesis was titled "Investigations of the Ultra-short Electromagnetic Waves." He was originally trained as an electrical power engineer and later moved on to research and teaching in the fields of plasma physics. Alfvén made many contributions to plasma physics, including theories describing the...

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...

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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.'