THE GALAXY EVOLUTION EXPLORER (GALEX) HAS PERFORMED SKY SURVEYS IN THE ULTRAVIOLET (UV) WITH DIFFERENT DEPTH AND COVERAGE. ITS DATABASE OF ABOUT 300 MILLION PHOTOMETRIC SOURCE MEASUREMENTS IN FAR-UV AND NEAR-UV OFFERS UNIQUE SENSITIVITY FOR IDENTIFYING AND STUDYING CLASSES OF ASTROPHYSICAL OBJECTS SUCH AS HOT STARS STAR-FORMING GALAXIES AND Z<2 QSOS. GALEX UV SOURCE CATALOGS ENABLE COMPREHENSIVE INVESTIGATIONS LONG AFTER THE MISSION IS CONCLUDED. ANOTHER UNIQUE GOLD MINE IS THE 130TB ARCHIVE OF INDIVIDUAL PHOTONS RECORDED BY GALEX'S MCP DETECTORS. UNTIL NOW ONLY INTEGRATED IMAGES AND PHOTOMETRY FROM EACH OBSERVATION WERE AVAILABLE IN THE PUBLIC ARCHIVE. NOW IT IS POSSIBLE TO SEARCH THROUGH THE PHOTON LIST AND EXTRACT PHOTOMETRY WITH CHOSEN TIME INTEGRATIONS FOR A GIVEN SOURCE. SUCH FACILITY OPENS UP UNPRECEDENTED OPPORTUNITIES FOR INVESTIGATIONS OF SHORT-TERM UV VARIABILITY SERENDIPITOUS AND UNBIASED OVER SAMPLES ORDERS-OF-MAGNITUDE LARGER THAN ANY DEDICATED VARIABILITY SEARCH COULD AFFORD AND THE ONLY ONE IN THE UV. WE WILL SEARCH FOR VARIABILITY ON ALL TIME SCALES AFFORDED BY THE DATABASE (FROM SECONDS TO THE>9 YEARS OF GALEX OPERATIONS) BUT ESPECIALLY ON THE FAST CADENCES FOR ALL HOT STELLAR SOURCES IN THE GALEX DATABASE. MOST OF THESE ARE VERY HOT WHITE DWARFS (WD) ELUSIVE AT ALL WAVELENGTHS EXCEPT THE UV OWING TO THEIR SMALL RADII AND HOT TEMPERATURES. WE HAVE IDENTIFIED ABOUT HALF A MILLION HOT WD CANDIDATES IN THE GALEX DATABASE WITH COROLLARY DATA AT LONGER WAVELENGTHS. THE GALEX-SELECTED HOT-WD SAMPLES ARE ORDERS OF MAGNITUDE LARGER THAN PREVIOUS CATALOGS AND UNBIASED THANKS TO THE UV SELECTION (E.G. BIANCHI ET AL. 2011A). OF PARTICULAR INTEREST ARE THE HOT WDS IN BINARIES WITH A COOLER (LESS EVOLVED) STAR UNIQUELY IDENTIFIED AND CHARACTERIZED FROM MATCHED UV-?? OPTICAL PHOTOMETRY. WE WILL PRODUCE A CATALOG OF FAST-CADENCE PHOTOMETRY FOR THE HOT STELLAR SOURCES SEARCH FOR VARIABILITY AND ANALYZE THE DETECTED VARIABLES. WE EXPECT THE OUTCOME TO INCLUDE SEVERAL CLASSES OF STARS WITH VARIABILITY WITHIN A GALEX OBSERVATION: CATACLYSMIC VARIABLES FLARING STARS BE STARS TRANSITING OBJECTS ORBITING WHITE DWARFS WD PULSATORS AND - MORE RARE BUT EXTREMELY RELEVANT - ECLIPSING BINARIES. DETECTION OF ECLIPSING HOT WDS WILL HAVE GREAT RELEVANCE FOR UNDERSTANDING STELLAR EVOLUTION OF INTERMEDIATE MASS STARS HELPING TO CLARIFY THE RELATION BETWEEN THE INITIAL MASS (UP TO ABOUT 8 SOLAR MASSES) TO THE FINAL WD MASS (<1 SOLAR MASS) CRITICAL FOR THE YIELD OF CHEMICAL ELEMENTS AND THE CHEMICAL EVOLUTION OF GALAXIES THE DEGENERATE MASS-RADIUS RELATION AND BINARY EVOLUTION. WE ALSO EXPECT TO DETECT TRANSITS BY PLANETS IN TIGHT ORBITS AROUND THE HOT WDS: THE PLANET/HOT-STAR FLUX CONTRAST IN THE UV AND THE SHORT (FEW MINUTES) EXPECTED DURATIONS MAKE OUR SEARCH UNIQUELY SENSITIVE TO SUCH DETECTION AND THE UNPRECEDENTEDLY LARGE SAMPLE WILL STATISTICALLY ASSESS THE EXISTENCE OF STAR-GRAZING PLANETARY BODIES. ALONG WITH OUR SCIENCE RESULTS WE WILL PUBLICLY RELEASE CATALOGS OF TIME-RESOLVED PHOTOMETRY FOR THE ENTIRE SAMPLE CATALOGS OF VARIABLES WITH ADDITIONAL COROLLARY DATA AND PRODUCTS (FFT IMAGE CUBES) AND RELATED SCIENCE TOOLS. THESE WILL SUPPORT FOLLOW-UP INVESTIGATIONS BY THE SCIENTIFIC COMMUNITY BEYOND OUR OWN GOALS. AS PART OF OUR PROJECT WE WILL ALSO CHARACTERIZE INSTRUMENTAL EFFECTS AT BRIGHT COUNT-RATES: THIS RESULT WILL BE OF GENERAL RELEVANCE TO ANY INVESTIGATION WITH GALEX DATA.