WE ARE PROPOSING AXIS THE ADVANCED X-RAY IMAGING SATELLITE FOR CONSIDERATION FOR A PROBE CONCEPT. AXIS WILL HAVE SIMILAR OR BETTER ANGULAR RESOLUTION THAN CHANDRA AND HAVE TEN TIMES THE COUNTING RATE FOR MOST SOURCES ALLOWING CONSIDERABLY MORE SCIENCE PER UNIT TIME AND THE ACCOMPLISHMENT OF SCIENCE OBJECTIVES NOT POSSIBLE WITH CHANDRA. THIS MISSION WILL VASTLY ENHANCE THE STUDY OF THE UNIQUE SCIENCE OF THE HIGH-ENERGY UNIVERSE WHICH REQUIRES X-RAY OBSERVATIONS AND COMPLEMENT THE NEXT GENERATION OF ASTRONOMICAL OBSERVATORIES FINALLY AS SEEN BY THE STRONG SYNERGY BETWEEN CHANDRA AND XMM-NEWTON HAVING A HIGH THROUGHPUT SPECTROSCOPIC MISSION (ATHENA) FLYING AT THE SAME TIME AS A HIGH RESOLUTION X-RAY IMAGER VASTLY INCREASES THE SCIENCE PHASE SPACE. WE WILL BUILD ON THE MIRROR TECHNOLOGY PROGRAM STARTED BY THE CONSTELLATION-X/IXO PROGRAM TO PRODUCE HIGH ANGULAR RESOLUTION LIGHTWEIGHT X-RAY OPTICS WITH LOW WEIGHT AND REASONABLE COST UTILIZING PRECISION POLISHING AND LIGHT WEIGHTING OF SINGLE-CRYSTAL SILICON MIRRORS. THIS TECHNOLOGY HAS ACHIEVED 3 ARCSEC ANGULAR RESOLUTION FOR INDIVIDUAL MIRROR SEGMENTS AND BUILDS ON RECENT DEVELOPMENTS IN THE SEMICONDUCTOR INDUSTRY. THE BASELINE DETECTOR IS SIMILAR TO THE CHANDRA CCD BUT BENEFITS FROM 25 YEARS OF TECHNOLOGY DEVELOPMENT ALLOWING SMALLER PIXELS WHICH BETTER SAMPLE THE PSF IN TURN ALLOWING HIGHER EFFECTIVE ANGULAR RESOLUTION. AS REQUIRED BY THE PROBES PROGRAM WE WILL DESIGN TO OBTAIN THE BEST SCIENCE FOR A FIXED COST. THE AXIS SCIENCE OBJECTIVES ARE DIRECTLY RESPONSIVE TO THE GOALS SET FORTH BY THE ASTRO2010 DECADAL SURVEY AND THE NASA ASTROPHYSICS ROADMAP. SOME OF OUR PROPOSED SCIENCE HIGHLIGHTS INCLUDE: PROBING THE REGIONS WITHIN 20 SCHWARZSCHILD RADII OF ACCRETING BLACK HOLES VIA GRAVITATIONAL LENSING DETERMINING THE RATE OF BLACK HOLE MERGERS BY MEASURING THE RATE OF DUAL AGN UNDERSTANDING WHY MOST BLACK HOLES IN THE LOCAL UNIVERSE ARE NOT ACTIVE BY IMAGING THE BONDI ACCRETION RADIUS MEASURING FEEDBACK AND STAR FORMATION BY XRAY IMAGING OF NORMAL GALAXIES TO Z>2 VASTLY ENLARGING THE SAMPLE OF HIGH SIGNAL-TO-NOISE HIGH ANGULAR RESOLUTION IMAGES OF SUPERNOVA REMNANTS AND CLUSTERS OF GALAXIES