sep 252012
 
Scientists Shed Light on Riddle of Sun's Explosive Events

  Four decades of active research and debate by the solar physics community have failed to bring consensus on what drives the Sun’s powerful coronal mass ejections (CMEs) that can have profound “space weather” effects on Earth-based power grids and satellites in near-Earth geospace.  A computer visualization of the Sun (red sphere) and its magnetic [continue reading]

aug 312012
 
Walls of Lunar Crater Hold Patchy Ice

  Small patches of ice could make up at most five to ten percent of material in walls of Shackleton crater. Shackleton is an impact crater at the south pole of the Moon. The crater is more than 12 miles wide and two miles deep (21 km in diameter and 4.2 km deep). Image Credit: [continue reading]

aug 212012
 
The interior of Mars will be Investigated by InSight, a New NASA Mission

  NASA has selected a new mission, set to launch in 2016, that will take the first look into the deep interior of Mars to see why the Red Planet evolved so differently from Earth as one of our Solar System’s rocky planets. Mars, the “Red Planet”. Image Credit: NASA The new mission, named InSight, [continue reading]

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]

jun 222012
 
Extensive Water in Mars Interior

  Until now, Earth was the only planet known to have vast reservoirs of water in its interior. Scientists analyzed the water content of two Martian meteorites originating from inside the Red Planet. They found that the amount of water in places of the Martian mantle is vastly larger than previous estimates and is similar [continue reading]