Can we detect the moons of extrasolar planets? For two decades, astronomers have made enormous progress in the detection and characterisation of exoplanetary systems but the identification of an "exomoon" is notably absent. In this thesis, David Kipping shows how transiting planets may be used to infer the presence of exomoons through deviations in the time and duration of the planetary eclipses. A detailed account of the transit model, potential distortions, and timing techniques is covered before the analytic forms for the timing variations are derived. It is shown that habitable-zone exomoons above 0.2 Earth-masses are detectable with the Kepler space telescope using these new timing techniques.
Based on primary research into the public lectures of management gurus, this fascinating new volume analyzes how such gurus disseminate their ideas, values and visions on the international management lecture circuit. Adopting a novel conceptual/theoretical perspective, it brings together insights from the fields of management, sociology, media studies, communications and social psychology. Written by leading figures in the field, this topical book covers such broad ranging areas as the live presentation of management ideas, using rhetoric, legitimating ideas, values and visions, the grammar of persuasion and charisma and oratory and is a valuable resource for students academics and researchers in the fields of management, sociology, and communications.
This book looks at the persistence of life and how difficult it would be to annihilate life, especially a species as successful as humanity. The idea that life in general is fragile is challenged by the hardiness of microbes, which shows that astrobiology on exoplanets and other satellites must be robust and plentiful. Microbes have adapted to virtually every niche on the planet, from the deep, hot biosphere, to the frigid heights of the upper troposphere. Life, it seems, is almost indestructible. The chapters in this work examine the various scenarios that might lead to the extermination of life, and why they will almost always fail. Life's highly adaptive nature ensures that it will cling on no matter how difficult the circumstances. Scientists are increasingly probing and questioning life's true limits in, on and above the Earth, and how these limits could be pushed elsewhere in the universe. This investigation puts life in its true astronomical context, with the reader taken on a journey to illustrate life's potential and perseverance.
Kicked out of yet another boarding school, Archie couldn't be happier to find himself back in London with old friends and an exciting social life. But he's worried about his cousin Ty, who is facing a sentence in a Young Offender Institution and doesn't seem to be coping. And he's finding that his old friends have moved on and it's a struggle to keep up with their new lives. When he begins to learn surprising things about Ty, Archie goes on a mission to discover the truth about his cousin's past. But who is the real Ty? The thrilling follow-up to When I Was Joe and Almost True takes readers on a terrifying adventure through London's gangland.
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