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Robert Wald has formulated QFT in curved space time in terms of it's algebra of observables on a manifold.  In doing so he has, perhaps unintentionally, provided framework in which very different theories of quantum gravity look very similar.  ...

Blog Post - Hontas Farmer - Aug 9 2009 - 8:15pm - 0 attachments

... are gas giants with characteristics similar to Jupiter and Neptune.   The new find, COROT-Exo-7b, is different: its diameter is less than ...

Article - News Staff - Feb 3 2009 - 1:50pm - 0 attachments

Mountains that rise from the seafloor, called seamounts, represent one of the most common ecosystems on earth, say scientists from the NOAA and Texas A&M University–Corpus Christi. Their findings reverse previous beliefs about the prevalence of se ...

Article - News Staff - Apr 30 2010 - 11:43am - 0 attachments

... assumptions about the composition of its atmosphere. Neptune-sized planets as hot as 800 Kelvin -- about 1,000 degrees Fahrenheit -- ... itself. Size comparison of Gliese 436 b with Neptune (photo credit: wikipedia) The resulting data were used to ...

Article - News Staff - Apr 22 2010 - 12:15pm - 0 attachments

... ideas about the state of water on the planet Neptune were probably incorrect. Closer at hand, water in a glass could be ...

Article - News Staff - Mar 16 2007 - 12:26pm - 0 attachments

Old notion: Giant clouds of gas and dust to collapse inward due to gravity, growing denser and hotter until igniting nuclear fusion and forming stars.  New notion:  It's more than just gravity and cosmic magnetic fields play a more important role in star ...

Article - News Staff - Sep 9 2009 - 12:19pm - 0 attachments

... belts, have been discovered at Jupiter, Saturn, Uranus and Neptune but it has only been possible to observe the variability of their ...

Article - News Staff - Sep 13 2009 - 8:39pm - 0 attachments

... will shed light on how "ice giant" planets like Uranus and Neptune -- and the more distant swarm of small, icy bodies known as the Kuiper ...

Article - News Staff - Aug 29 2009 - 10:15am - 0 attachments

Scientists are often assumed to be obsessed by definitions. After all, if you cannot  precisely  define a concept, say what a planet is, or what a biological species is, you literally don’t know what you are talking about, and how can you then possibl ...

Article - Massimo Pigliucci - Aug 26 2009 - 9:53am - 0 attachments

... 2 was extended so that it could be sent to Uranus and Neptune by means of gravity assist from Saturn. The probe became the first and only spacecraft to travel to Uranus and Neptune, thus completing the Planetary Grand Tour - a rare geometric ...

Article - Kimberly Crandell - Aug 25 2009 - 10:07am - 0 attachments