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| May 12, 2008 |
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Solar Variability And Climate Change Pasadena CA (JPL) May 08, 2008 
The sun has powered almost everything on Earth since life began, including its climate. The sun also delivers an annual and seasonal impact, changing the character of each hemisphere as Earth's orientation shifts through the year. Since the Industrial Revolution, however, new forces have begun to exert significant influence on Earth's climate. "For the last 20 to 30 years, we believe greenhouse ... read more |
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New NASA Tool Allows Amateurs To Explore The Ionosphere From The Inside
Boulder CO (SPX) May 09, 2008Last week at the Space Weather Workshop in Boulder, Colorado, NASA released a 4D live model of the Earth's ionosphere. Without leaving home, anyone can fly through the layer of ionized gas that encircles Earth at the edge of space itself. All that is required is an Internet connection and a free copy of Google Earth. NASA calls the ionosphere the "last wisp of Earth's atmosphere that astronauts ... more APL's STEREO Mission Stars In Smithsonian IMAX Film 
Baltimore MD (SPX) May 07, 2008STEREO spacecraft animations created by Steve Gribben of the Technical Communications Group at APL sizzle on the big screen in 3D Sun, a digital IMAX film that opened in March at the Smithsonian Air and Space Museum in Washington, D.C. The 20-minute movie features the STEREO - for Solar TErrestrial RElations Observatory - mission to help audiences understand the impact the sun has on Earth. ... more A Super Solar Flare 
Washington DC (SPX) May 07, 2008At 11:18 AM on the cloudless morning of Thursday, September 1, 1859, 33-year-old Richard Carrington-widely acknowledged to be one of England's foremost solar astronomers-was in his well-appointed private observatory. Just as usual on every sunny day, his telescope was projecting an 11-inch-wide image of the sun on a screen, and Carrington skillfully drew the sunspots he saw. ... more ATK Conducts Successful Test Firing Of Space Shuttle Reusable Solid Rocket Motor 
Minneapolis MN (SPX) May 05, 2008The Utah desert was filled with the sight and sound of power as Alliant Techsystems conducted a successful test firing of NASA's space shuttle reusable solid rocket motor (RSRM) as part of continuous testing to improve performance and ensure safety of the space shuttle and to aid development of the first stage of Ares I. An average of 2.6 million pounds of thrust was generated during the ... more Solar Games At Paranal 
Cerro Paranal, Chile (SPX) May 05, 2008Cerro Paranal, home of ESO's Very Large Telescope, is certainly one of the best astronomical sites on the planet. Stunning images, obtained by ESO staff at Paranal, of the green and blue flashes, as well as of the so-called 'Gegenschein', are real cases in point. The Earth's atmosphere is a gigantic prism that disperses sunlight. In the most ideal atmospheric conditions, such as those ... more |
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Washington DC (SPX) Apr 28, 2008An international team of scientists has detected that some of the glow of Earth's aurora is polarized, an unexpected state for such emissions. Measurements of this newfound polarization in the Northern Lights may provide scientists with fresh insights into the composition of Earth's upper atmosphere, the configuration of its magnetic field, and the energies of particles from the Sun, the research ... more Solar Flares Set The Sun Quaking 
Paris, France (ESA) Apr 21, 2008Data from the ESA/NASA spacecraft SOHO shows clearly that powerful starquakes ripple around the Sun in the wake of mighty solar flares that explode above its surface. The observations give solar physicists new insight into a long-running solar mystery and may even provide a way of studying other stars. The outermost quarter of the Sun's interior is a constantly churning maelstrom of hot ga ... more The Source Of The Solar Wind 
Belfast, Ireland (SPX) Apr 04, 2008An international team of scientists have found the source of the stream of particles that make up the solar wind. In a presentation on Wednesday 2 April at the RAS National Astronomy Meeting in Belfast, Professor Louise Harra of the UCL-Mullard Space Science Laboratory explained how astronomers have used a UK-led instrument on the orbiting Hinode space observatory to finally track down the ... more The Sun's Magnetic Fountains 
London, UK (SPX) Apr 02, 2008Astronomers have known for decades that the Sun has a very dynamic atmosphere. Huge fountains of hot gas erupt in the atmosphere, or corona, every few minutes, travelling at tens of thousands of km per hour and reaching great heights. Now a team of scientists have used the Hinode spacecraft to find the origin and driver of these fountains - immense magnetic structures that thread through the ... more Focused Solar Explosions Get Hotter 
Greenbelt MD (SPX) Apr 03, 2008A NASA-funded researcher has discovered that solar flares -- explosions in the atmosphere of the sun -- get much hotter when they stay "focused". "A flare typically divides its energy between directly heating the solar atmosphere and accelerating particles," said Dr. Ryan Milligan of the Oak Ridge Association of Universities, Tennessee, who is stationed at NASA's Goddard Space Flight Center in ... more |
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Greenbelt MD (SPX) Mar 04, 2008About 93 million miles from us lies an immense nuclear furnace spanning 100 Earths. In just one second, it produces enough power to supply the entire United States for nine million years. It is the closest star, our sun. Although its light powers almost all life on Earth, the sun has a dark side. Storms from the sun can knock our finely tuned technological civilization off balance, disrupt ... more SOHO To Give Early Warning Of Radiation Storms 
Greenbelt MD (SPX) Feb 28, 2008Explosive events on the sun can blast particles to high speeds, causing intense radiation storms that can disable spacecraft and cause radiation sickness or cancer in unprotected astronauts. Advance warning of radiation storms could give astronauts time to take cover and allow satellite operators to take protective measures. Scientists are now testing a new method that could do just that. ... more Ulysses Odyssey Around Sol Nearly Over 
Paris (AFP) Feb 22, 2008Ulysses, a US-European space scout that has been orbiting the Sun for 17 years, almost four times its expected lifetime, is on the brink of dying, the European Space Agency (ESA) said on Friday. A joint mission between ESA and NASA, Ulysses was launched by space shuttle in 1990 in the first mission to study the environment of space above and below the poles of the Sun. The probe is on a ... more Ulysses Mission Coming To A Natural End 
Paris, France (ESA) Feb 25, 2008Ulysses, the mission to study the Sun's poles and the influence of our star on surrounding space is coming to an end. After more than 17 years in space - almost four times its expected lifetime - the mission is finally succumbing to its harsh environment and is likely to finish sometime in the next month or two. Ulysses is a joint mission between ESA and NASA. It was launched in 1990 from ... more UC Riverside Space Scientist Receives Unusual Grant From The Department Of Energy 
Riverside CA (SPX) Jan 29, 2008A UC Riverside research scientist has received an unusual grant from the Department of Energy. There is no dollar value to the grant. Instead, Nikolai V. Pogorelov has been awarded 850,000 processor hours on the seventh fastest computer in the world, located at Oak Ridge National Laboratory, Tenn. Pogorelov's research project was one of only 17 projects from universities nationwide support ... more
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