jul 032012
 
Magnetic Fields on the Sun will be Studied by SUMI

  On July 5, NASA will launch a mission called the Solar Ultraviolet Magnetograph Investigation or SUMI, to study the intricate, constantly changing magnetic fields on the Sun in a hard-to-observe area of the Sun’s low atmosphere called the chromosphere. SUMI’s instruments are designed to study magnetic fields of the sun’s chromosphere — a thin [continue reading]

jun 302012
 
Hidden Portals in Earth's Magnetic Field

  A favorite theme of science fiction is “the portal”–an extraordinary opening in space or time that connects travelers to distant realms. A good portal is a shortcut, a guide, a door into the unknown. If only they actually existed…. It turns out that they do, sort of, and a NASA-funded researcher at the University [continue reading]

mei 232012
 
Waves at the Boundary of Mercury's Magnetosphere

  MESSENGER scientists have concluded that waves driven by the Kelvin-Helmholtz (KH) instability play a key role in driving Mercury’s magnetosphere. In a paper published recently in the Journal of Geophysical Research, the team reports on frequent detections of such waves at the outer edge of the innermost planet’s magnetosphere. Mercury The paper was selected [continue reading]

apr 142012
 
Uranus auroras glimpsed from Earth

For the first time, scientists have captured images of auroras above the giant ice planet Uranus, finding further evidence of just how peculiar a world that distant planet is. Detected by means of carefully scheduled observations from the Hubble Space Telescope, the newly witnessed Uranian light show consisted of short-lived, faint, glowing dots – a [continue reading]