How Common are Extrasolar, Late Heavy Bombardments?
How do Most Planets Form? -- Constraints on Disk Instability from Direct Imaging
How do the small planetary satellites rotate?
How initial and boundary conditions affect protoplanetary migration in a turbulent sub-Keplerian accretion disc: 2D non viscous SPH simulations
How planet-planet scattering can create high-inclination as well as long-period orbits
How selection and weighting of astrometric observations influence the impact probability. Asteroid (99942) Apophis case
How terrestrial planets traverse spin-orbit resonances: A camel goes through a needle's eye
How to Weigh a Star Using a Moon
HST Astrometry of Transneptunian Objects
HST/ACS Observations of Europa's Atmospheric UV Emission at Eastern Elongation
HST/NICMOS detection of HR 8799 b in 1998
HST/STIS Lyman-alpha observations of the quiet M dwarf GJ436: Predictions for the exospheric transit signature of the hot neptune GJ436b
Hubble Space Telescope Observations of Main Belt Comet (596) Scheila
Hubble Space Telescope Optical Imaging of the Eroding Debris Disk HD 61005
Hubble Space Telescope Transmission Spectroscopy of the Exoplanet HD 189733b: High-altitude atmospheric haze in the optical and near-UV with STIS
Hybrid methods in planetesimal dynamics (I) : Description of a new composite algorithm
Hydrodynamic outcomes of planet scattering in transitional discs
Hydrodynamical simulations of viscous overstability in Saturn's rings
Hydrogen Greenhouse Planets Beyond the Habitable Zone