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Primordial Dry Ice Fuels Comet Jets

By Guest PostNovember 10, 2010Scienceastronomy, carbon dioxide, co2 gas, comet, comet tempel 1, cometary nucleus, deep impact spacecraft, digital color cameras, dry ice, epoxy mission, gas, hartley 2, infrared spectrometer, jessica sunshine, jet fuel, lori feaga, michael a'hearn, nucleus, particles, particles of dust, solar system, telescope, tempel 1, tony farnham, university of maryland, water vapor

*Initial science results on comet released from University of Maryland, much more to come UMD scientists say.*

Jets Galore. This enhanced image, one of the closest taken of comet Hartley 2. Image credit: University of Maryland

COLLEGE PARK, Md. – One of the biggest comet findings coming out of the amazing images and data taken by the University of Maryland-ledEPOXI mission as it zipped past comet Hartley 2 last week is that dry ice is the ‘jet’ fuel for this comet and perhaps many others.

Images from the flyby show spectacular jets of gas and particles bursting from many distinct spots on the surface of the comet. This is the first time images of a comet have been sharp enough to allow scientists to link jets of dust and gas with specific surface features. Analysis of the spectral signatures of the materials coming from the jets shows primarily CO₂ gas (carbon dioxide) and particles of dust and ice.

“Previously it was thought that water vapor from water ice was the propulsive force behind jets of material coming off of the body, or nucleus, of the comet,” said University of Maryland Astronomy Professor Jessica Sunshine, who is deputy principal investigator for the EPOXI mission. “We now have unambiguous evidence that solar heating of subsurface frozen carbon dioxide (dry ice), directly to a gas, a process known as sublimation, is powering the many jets of material coming from the comet. This is a finding that only could have been made by traveling to a comet, because ground based telescopes can’t detect CO₂ and current space telescopes aren’t tuned to look for this gas,” Sunshine said. (more…)

USGS Oil and Gas Resource Estimates Updated for the National Petroleum Reserve in Alaska (NPRA)

By Guest PostOctober 26, 2010Economy, General3 d seismic survey, alaska, conventional gas, crude oil, gas, giant alpine field, marcia mcnutt, national petroleum reserve, npra, oil, oil exploration, petroleum, reservoir, reservoir rocks, U.S. Geological Survey, undiscovered oil

The U.S. Geological Survey estimates 896 million barrels of conventional, undiscovered oil and 53 trillion cubic feet of conventional, undiscovered non-associated gas within NPRA and adjacent state waters. The estimated volume of undiscovered oil is significantly lower than in 2002, when the USGS estimated there was 10.6 billion barrels of oil. The new estimate, roughly 10% of the 2002 estimate, is due primarily to the incorporation of new data from recent exploration drilling revealing gas occurrence rather than oil in much of NPRA. (more…)

BP, Deepwater Horizon and the Armageddon Scenario

By PravdaJuly 25, 20103 commentsEnvironment, Politicsbp exploration, chris landau, deepest oil, deepwater horizon, environmental catastrophe, extinction, gas, gas bubbles, geologist, gulf of mexico, halliburton inc, late paleocene, media blackout, methane, ocean bed, oilrig, permian, south korea, state-of-the-art, terrence aym, thermal maximum, tiber reservoir, wildlife

What exactly is going on in the Gulf of Mexico? When there are reports of media blackouts, then the natural reaction is to start investigating, and in the current environmental catastrophe, the more stones one turns, the more horrific the potential scenario becomes. While scare mongering is as pointless as it is dangerous, the truth remains that the media have the duty to inform.

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Tag Archives: gas

Primordial Dry Ice Fuels Comet Jets

USGS Oil and Gas Resource Estimates Updated for the National Petroleum Reserve in Alaska (NPRA)

BP, Deepwater Horizon and the Armageddon Scenario