One of the YEC arguments often used is that, if the sun is powered by nuclear fusion, is that the # of neutrinos coming from it are too low. You will find this on a number of creationist websites, including Hovind's and ICR and AiG. April's Scientific American has an article with the answers:
"English physicist Arthur Eddington suggested as early as 1920 that nuclear fusion powered the sun, but efforts to confirm critical details of this idea in the 1960s ran into a stumbling block: experiments designed to detect a distinctive by-product of solar nuclear fusion reactions--ghostly particles called neutrinos--observed only a fraction of the expected number of them. It was not until last year, with the results from the underground Sudbury Neutrino Observatory (SNO) in Ontario, that physicists resolved this conundrum and thereby fully confirmed Eddington's proposal."
"Using this ability, SNO has demonstrated that the deficit of solar neutrinos seen by earlier experiments resulted not from poor measurements or a misunderstanding of the sun but from a newly discovered property of the neutrinos themselves."
"The excess of neutrinos measured by deuteron breakup means that nearly two thirds of the total 5.09 million neutrinos arriving from the sun are either muon- or tau-neutrinos. The suns fusion reactions can produce only electron-neutrinos, so some of them must be transformed on their way to the earth."
There it is. New physics. Neutrinos "change" and this accounts for the missing neutrinos. Now they are found.
"English physicist Arthur Eddington suggested as early as 1920 that nuclear fusion powered the sun, but efforts to confirm critical details of this idea in the 1960s ran into a stumbling block: experiments designed to detect a distinctive by-product of solar nuclear fusion reactions--ghostly particles called neutrinos--observed only a fraction of the expected number of them. It was not until last year, with the results from the underground Sudbury Neutrino Observatory (SNO) in Ontario, that physicists resolved this conundrum and thereby fully confirmed Eddington's proposal."
"Using this ability, SNO has demonstrated that the deficit of solar neutrinos seen by earlier experiments resulted not from poor measurements or a misunderstanding of the sun but from a newly discovered property of the neutrinos themselves."
"The excess of neutrinos measured by deuteron breakup means that nearly two thirds of the total 5.09 million neutrinos arriving from the sun are either muon- or tau-neutrinos. The suns fusion reactions can produce only electron-neutrinos, so some of them must be transformed on their way to the earth."
There it is. New physics. Neutrinos "change" and this accounts for the missing neutrinos. Now they are found.