The Hubble survey, taken with Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS), provides strong statistics pointing to the fact that brown dwarfs do not exist around even the least massive stars.
The study of Cas A and remnants like it help astronomers better understand how the explosions that generate them seed interstellar gas with heavy elements, heat it with the energy of their radiation, and trigger blast waves from which new stars form.
Scientists See Brain Aging Before Symptoms Appear Wednesday, 07 January 2009 03:40 UCLA scientists have used innovative brain-scan technology developed at UCLA, along with patient-specific information on Alzheimer's disease risk, to help diagnose brain aging, often before symptoms appear. Published in the January issue of Archives of General Psychiatry, their study may offer a more accurate method for tracking brain aging.
Did Earth's Twin Cores Spark Plate Tectonics? Wednesday, 07 January 2009 02:40 The driving mechanism for plate tectonics has long been a mystery to geologists. Now a new theory purports to have the answer: Our planet has two inner cores.
Five Ways the World Can End Tuesday, 06 January 2009 22:50 Five Ways the World Can End, Asteroid impact? Massive volcanoes? How about a passing black hole? There's lots of ways to destroy the Earth.
