X-ray pulsars/Doppler integrated navigation for Mars final approach
X-Ray Observations of High-z Radio Loud-Quiet Quasars
X-ray observations of black-hole accretion disks
X-ray measurements of the dark matter distribution in clusters of galaxies with Chandra
X-ray lines and absorption edges in GRBS and their afterglows
X-ray line emission from cataclysmic variables
X-Ray Halos as a Possible Constraint on an Intergalactic Dust Component
X-Ray Fluorescence Spectrometer Onboard Muses-C
X-ray fluorescence-diffraction analyzer for the SELENE-B lander-rover mission
X-Ray Fllaments in Cluster Cooling Flows
X-ray flares from late internal and late external shocks
X-ray emission of young SN Ia remnants as a probe for an explosion model
X-ray emission from the Sagittarius D region