Fading of the Transient Anomalous X-ray Pulsar XTE J1810-197
Fading of the X-ray flux from the black hole in the NGC 4472 globular cluster RZ 2109
Fadings of R Coronae Borealis stars - Random or chaotic?
Failed disk winds; a physical origin for the soft X-ray excess?
Failed Eruption of a Filament as a Driver for Vertical Oscillations of Coronal Loops
Failed gamma-ray bursts and orphan afterglows
Failed Gamma-Ray Bursts: Thermal UV/Soft X-ray Emission Accompanied by Peculiar Afterglows
Failed Oort Clouds and Planetary Migration
Failed optical afterglows
Failure of a Stability Conjecture in General Relativity
Failure of continuum methods for determining the effective temperature of hot stars
Failure of Magnetic Fields to Explain Rotation Curves of Spiral Galaxies
Failure of Standard Conservation Laws at a Classical Change of Signature
Failure to confirm the existence of interstellar methylamine-D /CH3NHD/
Faint 1.4 GHz sources in the 2dF Galaxy Redshift Survey
Faint 6.7um Galaxies and their Contributions to the Stellar Mass Density in the Universe
Faint AGN and the Ionizing Background
Faint AGN and the Ionizing Background
Faint AGN in z>~6 Lyman-break Galaxies Powered by Cold Accretion and Rapid Angular Momentum Transport
Faint and peculiar objects in GAIA: results from GSC-II