We study the effect of a Jovian planet on the gas distribution of a protoplanetary disc, using a new numerical scheme that allows us to take into consideration the global evolution of the disc, down to an arbitrarily small inner physical radius. We find that Jovian planets do not open cavities in the inner part of the disc (i.e. interior to their orbits) unless (a) the inner physical edge of th...

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“Shortly after the celebration of the four thousandth anniversary of the opening of space, Angary J. Gustible discovered Gustible’s planet. The discovery turned out to be a tragic mistake. Gustible’s planet was inhabited by highly intelligent life forms. They had moderate telepathic powers. They immediately mind-read Angary J. Gustible’s entire mind and life history, and embarrassed him very de...

VOLATILES IN IMPACT MELTS IN THE TISSINT METEORITE. Yang Chen, Yang Liu, Yunbin Guan, John M. Eiler, Chi Ma, George R. Rossman, and Lawrence A. Taylor. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Geol. & Planet. Sci., California Institute of Technology, Pasadena, CA 91125, USA; Planet. Geosci. Inst., Dept. of Earth & Planet. Sci., Univ. of Tenn., Knox...