Latest Helioseismology Stories

2010-09-09 13:36:38

Measuring the sun's core temperature The existence of Dark Matter particles in the Sun's interior seems inevitable, despite dark matter never having been observed (there or elsewhere), despite intensive ongoing searches. Once gravitationally captured by the Sun, these particles tend to accumulate in its core. In a paper to be published in the scientific journal " Science", Dr. Ilidio Lopes and Professor Joseph Silk propose that the presence of dark matter in the Sun's interior causes a...

2010-03-12 13:22:22

In today's issue of Science, NASA solar physicist David Hathaway reports that the top of the sun's Great Conveyor Belt has been running at record-high speeds for the past five years. "I believe this could explain the unusually deep solar minimum we've been experiencing," says Hathaway. "The high speed of the conveyor belt challenges existing models of the solar cycle and it has forced us back to the drawing board for new ideas." The Great Conveyor Belt is a massive circulating current of fire...

2009-11-24 15:54:48

Access to data from the ESA-NASA SOHO mission has just become easier with the launch of a new SOHO science archive with enhanced capabilities for searching and visualizing the vast SOHO data archive. This is the first in a new generation of science archives under development at ESA's European Space Astronomy Center. Since operations began in 1995 the Solar and Heliospheric Observatory (SOHO) has been transmitting data from its twelve scientific instruments back to Earth at a rate of 1...

2009-06-17 15:35:00

The sun is in the pits of a century-class solar minimum, and sunspots have been puzzlingly scarce for more than two years. Now, for the first time, solar physicists might understand why.At an American Astronomical Society press conference today in Boulder, Colorado, researchers announced that a jet stream deep inside the sun is migrating slower than usual through the star's interior, giving rise to the current lack of sunspots.Rachel Howe and Frank Hill of the National Solar Observatory (NSO)...

2008-10-23 14:00:00

Some of the first data collected by the CoRoT space telescope mission, launched in December 2006, provides valuable information about the physical vibrations and surface characteristics of nearby stars that are similar to our Sun, researchers say. This novel information illustrates the great value of space-based observations, and provides astronomers with insights into the interior of our Sun, other stars, and the overall evolution of our galaxy. The related report will be published by the...

2007-08-17 10:40:00

Scientists from the Ulysses mission have proven that sounds generated deep inside the Sun cause the Earth to shake and vibrate in sympathy. They have found that Earth's magnetic field, atmosphere and terrestrial systems, all take part in this cosmic sing-along. David Thomson and Louis Lanzerotti, team members of the HISCALE experiment, on board Ulysses, together with colleagues Frank Vernon, Marc Lessard and Lindsay Smith, present evidence that proves that Earth moves to the rhythm of the...

2007-05-14 12:25:00

Scientists may have at last found a way to explore the heart of the sun with the detection of a special type of wave generated deep in the solar interior. The heart, or core, of the sun is the location of the sun's nuclear furnace, where fusion reactions power the sunlight that supports almost all life on Earth. The Solar and Heliospheric Observatory (SOHO) spacecraft may have glimpsed these waves in the form of ripples on the sun's surface. Analysis of the ripples will reveal details about...

2007-05-03 16:39:10

The ESA-NASA Solar and Heliospheric Observatory (SOHO) may have glimpsed long-sought oscillations on the Sun's surface. The data will reveal details about the core of our star and it contains clues on how the Sun formed, 4.6 thousand million years ago. The subtle variations reveal themselves as a miniscule ripple in the overall movement of the solar surface. Astronomers have been searching for ripples of this kind since the 1970s, when they first detected that the solar surface was...

2006-03-14 12:33:19

Stanford -- The hidden face of the sun is fully visible for the first time, thanks to a new technique developed at Stanford University. Only half of the sun--the near side--is directly observable. The far side always faces away from Earth and is therefore out of view. But the new technology allows anyone with a computer to download images of the entire solar surface--an important advance with practical applications, say researchers, because potentially damaging solar storms that form on the...

2006-03-06 11:30:00

NSF -- The next sunspot cycle will be 30 to 50 percent stronger than the last one, and begin as much as a year late, according to a breakthrough forecast using a computer model of solar dynamics developed by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo. The research results, funded by the National Science Foundation (NSF) and NASA, were published on-line on March 3 in the American Geophysical Union journal Geophysical Research Letters. Scientists now...

Word of the Day
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".