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Letter from the editor

Planet Formation Through Gravitational Instabilities

planet formatioon

"It is now widely accepted that planets form in discs around young stars, with the most widely accepted planet formation scenario being a bottom-up process typically referred to as “core accretion.” The basic process involves a core growing through the accumulation of solids and, if it gets massive enough while there is still gas present in the disc, undergoing a runaway gas accretion phase to form a Jupiter-like gas giant...." – By Ken Rice

The Orbital Architecture of Exoplanetary Systems

The Orbital Architecture of Exoplanetary Systems

"The great diversity of extrasolar planetary systems has challenged our understanding of how planets form. During the formation process their orbits are modified while the protoplanetary disk is present. After its dispersal orbits may also be modified as a result of mutual gravitational interactions leading to their currently observed configurations in the longer term...." – By John C. B. Papaloizou

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