Free Republic

Jupiter's Spots Disappear Amid Major Climate Change By Robert Roy Britt Senior Science Writer posted: 01:00 pm ET 21 April 2004 Jupiter is undergoing major climate change and could lose many of its large spots over the next seven years, only to make way for the creation of fresh spots in a decades-long cycle, according to a new explanation of old mysteries. While the analysis remains to be proven, it is seen by other researchers as interesting and, importantly, testable even with large backyard telescopes. Philip Marcus, a professor at the University of California, Berkeley who came up with the...

Earth's magnetic field - the force that protects us from deadly radiation bursts from outer space - is weakening dramatically. Scientists have discovered that its strength has dropped precipitously over the past two centuries and could disappear over the next 1,000 years. The effects could be catastrophic. Powerful radiation bursts, which normally never touch the atmosphere, would heat up its upper layers, triggering climatic disruption. Navigation and communication satellites, Earth's eyes and ears, would be destroyed and migrating animals left unable to navigate. 'Earth's magnetic field has disappeared many times before - as a prelude to our magnetic poles flipping...

Researchers are preparing to test the highly controversial theory of a San Diego scientist, J. Marvin Herndon, who thinks a huge, natural nuclear reactor or "georeactor" -- a vast deposit of uranium several miles wide -- exists at Earth's core, thousands of miles beneath our feet... [I]t might help to explain otherwise puzzling phenomena of planetary science, such as fluctuations in the intensity of Earth's magnetic field... If Herndon's theoretical nuclear reactor really exists, then it should be gushing out antineutrinos that would fly through the roughly 4,000 miles of solid rock and emerge at the Earth's surface.