nov 182012
 
Magnetism Combines with Gravity to Shape Black Hole's Environment

  With a well-deserved reputation as monstrous destructive machines, black holes owe their power to huge quantities of mass that warp space and time until the gravitational force they command sucks in everything – even light. No surprise that astrophysicists have long considered gravity the dominant player in shaping the accretion disks of dust and [continue reading]

mrt 262012
 
Laser Hints at How Universe Got Its Magnetism

Scientists have used a laser to create magnetic fields similar to those thought to be involved in the formation of the first galaxies; findings that could help to solve the riddle of how the Universe got its magnetism. Composite image: the left side is a laser-produced shock wave whilst the right is a simulation of [continue reading]