Mid-infrared images of beta Pictoris and the possible role of planetesimal collisions in the central disk
Article Abstract:
The thermal infrared images of the central disk that imply that the brightness asymmetry results from the presence of a bright clump composed of particles that may differ in size from dust elsewhere in the disk is presented. It has been suggested that this clump results from the collisional grinding of resonantly trapped planetesimals or the cataclysmic break-up of a planetesimal.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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Tidal effects of disconnected hydrocarbon seas on Titan
Article Abstract:
A study of the topography of Titan, Saturn's largest satellite, proposes that the massive liquid hydrocarbons in this satellite exist as several disconnected seas or as crater lakes. Boundary-layer disturbance gives way to tidal dissipation in the satellite's ocean. Oceanic tidal friction is minor and is not adequate to resolve the high orbital eccentricity of Titan.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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How Mercury got its spin
Article Abstract:
Observations of planet Mercury has shown that its rotational period is only two-thirds of its orbital period(59 days compared to 88 days). The spin-orbit resonance of Mercury is analyzed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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