"What kind of research has been conducted regarding calcium depletion and human spaceflight?"
Content with the tag: “sleep disruption”
Sleeping through the Arctic Martian Sol
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chlorophyll concentration chondritic meteorites chrysophyte chrysophytes circumstellar disks circumstellar dust. citations climate climate change climate model climate modeling climate models clouds cnn co-evolution co3 cold environments collaborative technology colors comet cometary comet recovery comets comet wild 2 comics community community software complex life complex organics composition compound specific isotopic analysis computational chemistry conference contamination contamination control continental core accretion cork observatories cosmic rays cosmochemistry countermeasures coupled models cryptoendolith. crystalline water ice curriculum cyanobacteria cycling d/h ratio dance darwin sequence analysis data data analysis database databases data processing techniques dawn ddf decoherence deep-esp deep biosphere deep impact deep impact extended mission deep marine sediments deep subsurface biosphere deep terrestrial biosphere dehydratases dehydrogenases deinococci denitrifcation depthx desulfobulbus desulforhopalus detection methods: transit photometry deuterium deutertation devonian devon island dice dinosaurs director direct planet detection disk-averaged spectra. disk chemistry disks dissimilatory dissimilatory iron reduction distributed temperature sensor diversity dna dna. dna damage dna sequencing dolomite dolphin drilling dune dust dust flux dwarf star dynamical modeling dynamic global vegetation model dynamics e. coli ea early atmosphere early atmospheres early earth early earth geochemistry early evolution of life early life early mars early planetary system evolution early solar system earth earth’s early biosphere earth's early atmosphere earth's water earth-like planets earth and planetary science letters earth and planetary science letters (journal) earth evolution earth formation earthshine east pacific rise eclipsing ecogenomics ecosystem model edax education electric discharge electrochemistry electrocorrosion electronic arts element fractionation el ni�o embedded star formation enceladus encyclopedia of life endosymbiosis endourance endurance england environment environmental chemistry environments enzyme enzymes eoarchean epimerases epoxi erosion esa ethane eubacteria eukaryote eukaryote evolution eukaryotes eukaryotic-specific primers eukaryotic microbial community europa evaporation evaporite evolution evolution and environment exo-planetary systems exobiology exoplanet exoplanets exosolar planets expose express exremophiles extra-solar planets extrasolar life extrasolar planet extrasolar planets extraterrestrial extraterrestrial life extreme conditions extreme environment extreme environments extreme life extremeophiles extremephiles extremophiles faint companion farmer fe fe isotopes femtochemistry fiction fieldwork in april of 1999 in the tinto river located in the huelva district of southwestern spain fingerprint fischer-tropsch catalysis flood fluorescence in situ hybridization focus group formation routes 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interstellar medium interstellar molecules interviews in vitro evolution ionizing radiation ion microprobe iron iron –sulfides iron-sulfur enzymes iron-sulfur minerals iron concentrations iron formation iron isotope fractionation iron oxide iron oxidizers iron oxidizing bacteria iron reducers iron reduction kinetics irons-sulfur surfaces iron spectromicroscopy irradation irradiation ir spectroscopy isomerases isotope isotopes isotopic fractionation iss issol jack hills jakoba incarcerata jakoba libera jakobids jarosite journal:earth journal: journal of geophysical research journal of bacteriology journal of the american chemical society jpl jupiter kbo kbo size distribution kepler key nutrient metals kuiper belt kuiper belt objects laboratory laboratory investigation laboratory science lake lake bonney lakes landsat tm data laser laser desorption lassen lassen volcanic national park late accretion late bombardment late heavy bombardment ldn 673 left-handed lefty level of analysis lexen program life life and environment life elsewhere in the universe life in extreme life in our solar system life in the universe life on mars light lightning li isotopes lipids liquid liquid chromatography mass spectrometry lithic clasts lithophiles living in the microbial world: summer teacher enhancement - august 1999 lmt low-mass low-mass stars low albedo deposits lunar-like satellites lunar exploration lunar impacts m�ssbauer mafic maghemite magnesite magnet magnetic field magnetic fields magnetic fields - stars magnetite magnets main belt asteroids main belt comets maine malawimonas jakobiformis maps marco polo marine ecology marine sediments eukaryotes mars mars. mars analog mars analog. mars analogs mars analog site mars analogues mars atmosphere mars environmental chamber mars exploration mars express mars glaciers mars global surveyor mars habitability mars life mars maps mars methane mars orbiter mars reconnaissance orbiter mars rovers mars science laboratory mars time mars water martian analogues martian atmosphere martian channels martian dynamo martian meteorites martian oceans mass extinction mass extinctions mbcs mcmurdo dry valleys m dwarfs m dwarf stars media membranes mer mercury messenger metabolic chemistry metabolism first metagenome metagenomics metal isotope fractionation metal sulfides metamorphism meteor meteorite meteorites meteoritic organics meteors meterite meterorites methane methane cycle methanococcus methanogen methanogenesis methanogens methanopyrus methodology mexico micro-oxic environment microbes microbial microbial communities microbial community microbial community population structures microbial diversity microbial ecology microbial ecosystem microbial ecosystems microbial evolution microbial evolutionary processes. microbial geochemistry microbialite microbialites microbial life microbial mat microbial mats microbiology microgravity microlensing microorganisms microscopy mike russell miller-urey miller-urey experiments 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basement sediments seepage erosion segan medal serpentinization shoemaker short-lived radionucleides short-lived radionuclides siderite signatures of life silicon isotopes silurian sims sinkhole skaft��rkatlar lake sleep disruption slime world slime worlds sm-nd snow snowball earth so2 soft materials sogin soil soil moisture soil na soils solar-like young stars solar nebula solar panel solar system solar system: formation solar system chronology solar system ices south africa space shuttle space telescope science institute spark discharge spectral biosignatures spectroscopy spectroscopy. spirit spitzer space telescope spore sr isotopes stability stable isotopes star-formation star and planet formation stardust star formation star forming regions stars stars - x-rays stars: late-type steam atmosphere stellar flares steranes sterols stromatolites student internship sub-permafrost ecosystem subglacial volcanic lake subseafloor subseafloor hyperthermophiles subsurface subsurface biosphere subsurface life subsurface microbiology subterranean plants sulfate sulfate reducing bacteria sulfate reduction sulfide sulfide minerals sulfides sulfidic cave sulfidic mesoproterozoic ocean sulfur sulfuric acid speleogenesis sulfur isotopes sulfur mif summer camp summer school sun sun-earth connection sun-like stars super-earths super earths supergiant star supergiant stars supertrees surface temperature and relative humidity svalbard symbioses symbiosis-specific genes symbiotic synchrotron tardigrade targeted metal uptake tca cycle teachers technology worlds tectonics tega temperate-controlled mineral growth templates temporal frameworks teraforming terraforming terrestrial terrestrial atmospheres terrestrial planet finder (tpf) terrestrial planet formation terrestrial planets terrestrial subsurface thalassicolla nucleata theoretical/computational chemistry thermal and evolved-gas analyzer thermal emission spectrometer thermometer thermophiles thermus/deinococcus thioredoxins tholins 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