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Latest Aurora Stories

Densest Artificial Ionospheric Plasma Clouds Produced Using HAARP
2013-02-26 10:34:33

U.S. Naval Research Laboratory U.S. Naval Research Laboratory research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. "Previous artificial plasma density clouds have lifetimes of only ten minutes or less," said Paul Bernhardt, Ph.D., NRL Space Use and Plasma Section. "This higher...

New Rocket Project Aims To Study Auroral Wind Of Northern Lights
2013-02-01 13:41:57

Lawrence LeBlond for redOrbit.com - Your Universe Online For many in the extreme upper latitudes of the Northern Hemisphere, the Aurora borealis (better known as the Northern Lights) offer breathtaking displays of color and lights, dancing effortlessly across the night sky. These lights, which are caused by solar winds bouncing off the Earth´s upper atmosphere, are typically visible only around the Polar ℠auroral zone´ due to the strong magnetic forces around this region....

2013-01-23 23:02:55

The Aurora orthopedic surgeons that Denver´s professional sports franchises trust are hosting the First Annual Professional Lacrosse Sports Medicine Symposium at Sports Authority Field at Mile High on January 26th. Colorado Orthopedic Consultants will have three of their own surgeons speaking at the event, which will focus on injuries and treatment in professional lacrosse. Denver, Colorado (PRWEB) January 23, 2013 Colorado Orthopedic Consultants — the Aurora orthopedic surgeons...

Auroras Exist Elsewhere Besides Earth, Say Planetary Scientists
2013-01-21 15:01:22

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Every year, eager sky watchers travel to the northern reaches of the Earth to catch a glimpse of the northern lights. This spectacle of color in the atmosphere — the Aurora Borealis and its companion to the south, the Aurora Australis — arises as the solar wind interacts with our atmosphere. When charged particles from our Sun hit our atmosphere, oxygen and nitrogen atoms become excited. As the atoms relax,...

2013-01-16 23:01:18

The Havana Business Improvement District´s 3rd Annual Grocery Cart Races benefit Aurora´s Comitis Crisis Center. Join us Weds., Jan. 30, 2013! Aurora, Colorado (PRWEB) January 16, 2013 “It´s crazy, it´s fun and it restocks the food pantries at Comitis,” said Gayle Jetchick, Executive Director for the District. “Reminiscent of the game show ℠Supermarket Sweep,´ it´s one of the most popular events we do each year.” On Wednesday,...

Solar Wind Storms Earth, Enhances Northern Lights
2012-12-17 15:22:33

Lee Rannals for redOrbit.com — Your Universe Online NASA said on Monday that our planet has entered a stream of high-speed solar wind that "escaped" through a coronal hole on the Sun. The solar wind that Earth is passing through has forecasters from the NOAA estimating a slight 20 percent chance of geomagnetic storms, but NASA says that high-latitude residents could benefit from the event. Sky watchers may want to step out into their backyards for the next few nights to...


Latest Aurora Reference Libraries

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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...

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2004-10-19 04:45:41

Aurora -- The Polar Aurora are natural displays of light in the sky that can be seen with the unaided eye only at night. An auroral display in the Northern Hemisphere is called the aurora borealis, or the northern lights; in the Southern Hemisphere it is called the aurora australis. Auroras are the most visible effect of the sun's activity on the earth's atmosphere. The beautiful and often eerie curtains of light in the night time sky have been observed by people for millennia. An aurora...

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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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2004-10-19 04:45:41

Solar Wind -- Solar wind, a stream of particles (mostly high-energy protons ~ 500 Kev) that is continually ejected from the surface of the Sun. The composition of this plasma is identical to the Sun's corona, 73% hydrogen and 25% helium with the remainder as trace impurities, and is ionized. Near Earth, the velocity of the solar wind varies from 200km/s-889km/s. The average is 450 km/s. Approximately 3000 tons of material is lost from the Sun every hour as solar wind. Since solar...

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2004-10-19 04:45:41

Solar Flare -- A solar flare is a violent eruption that explodes from a star's photosphere with energies equivalent to tens of millions of hydrogen bombs. Solar flares from the Sun send out a streams of highly energetic solar wind that can present a radiation hazard to spacecraft outside of planetary magnetospheres and can disrupt radio signals on Earth. Solar flares were first observed on the Sun in 1859 by English astronomer Richard Carrington. They have also been observed to...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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