jul 232012
Unexpectedly Slow Motions Below the Sun's Surface

  New observations of seismic oscillations on the Sun’s surface from NASA’s SDO mission challenge our understanding of interior solar dynamics. Pattern of convection at the surface of the Sun observed by the SDO/HMI instrument. Credit: MPS/NASA The interior motions of the Sun are much slower than predicted. Rather than moving at the speed of [continue reading]

jul 092012
Researchers Create “MRI” of the Sun’s Interior

  A team of scientists has created an “MRI” of the Sun’s interior plasma motions, shedding light on how it transfers heat from its deep interior to its surface. The result, which appears in the journal the Proceedings of the National Academy of Sciences, increases our understanding of how heat is transported outwards by the Sun [continue reading]