apr 152013
 
Best Spots on Europa to Search for Extraterrestrial Life

  The surface of Jupiter’s moon Europa exposes material churned up from inside the moon and also material resulting from matter and energy coming from above. If you want to learn about the deep saltwater ocean beneath this unusual world’s icy shell — as many people do who are interested in possible extraterrestrial life — [continue reading]

mrt 022013
 
A New Radiation Belt Around Earth Discovered

  NASA’s Van Allen Probes mission has discovered a previously unknown third radiation belt around Earth, revealing the existence of unexpected structures and processes within these hazardous regions of space. A graphic depicting the twin Van Allen Probes in orbit within Earth’s magnetic field. Image Credit: JHU/APL Previous observations of Earth’s Van Allen Radiation Belts have [continue reading]

jan 212013
 
Auroras Also Occur Outside our Solar System

  University of Leicester planetary scientists have found new evidence suggesting auroras – similar to Earth’s Aurora Borealis – occur on bodies outside our Solar System. Auroras Bigger Than the Entire Earth: This image shows X-ray auroras observed by the Chandra X-ray Observatory overlaid on a simultaneous optical image from the Hubble Space Telescope of [continue reading]

okt 152012
 
Solar Wind Delivers Water to the Moon and other Solar System Bodies

  Three years ago University of Tennessee, Knoxville, researchers helped to discover water on the surface of the Moon. Now, they are piecing together the origin of that water: solar wind. This microscope image shows a grain of agglutinate glass similar to those analyzed in the lunar surface-water study reported in Nature Geoscience. The specimen [continue reading]

okt 032012
 
The Science Behind those Eye-Popping Northern Lights

  Northern night skies have recently been alive with light. Those shimmering curtains get their start about 93 million miles away, on the Sun. An image of an aurora borealis, and moonrise in the Brooks Range in northern Alaska at the Chandler Shelf in December 2008. Image Credit: guardian.co.uk/Rolf Hicker/Barcroft Media  An aurora borealis (aurora australis [continue reading]

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]