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2 results

  • 10 - Icy Worlds

  • from Part IV - Astrobiological Targets
  • Manasvi Lingam, Florida Institute of Technology, Amedeo Balbi, Università degli Studi di Roma 'Tor Vergata'
  • Book:
    From Stars to Life
    Published online:
    22 November 2024
    Print publication:
    05 December 2024, pp 222-245

  • Summary

    Icy worlds with subsurface oceans are potentially among the most common repositories of liquid water in the Universe. Moreover, the solar system is confirmed to host a number of such worlds, notably: Europa, Enceladus, and Titan. Motivated by these considerations, this chapter examines the habitability of icy worlds from a general standpoint. The oceanic properties of Europa, Enceladus, and Titan are reviewed, followed by a simple analysis of the physical conditions in which subsurface oceans may be supported. The pathways for the formation of the building blocks of life, their assembly into polymers, and subsequent delivery to the subsurface ocean are elucidated. The possible constraints on the availability of energy sources and bioessential elements are delineated, as well as the types of organisms and ecosystems that could exist. The chapter concludes by briefly speculating about the trajectories of biological evolution conceivable on icy worlds.

From Stars to Life
  • A Quantitative Approach to Astrobiology
  • Manasvi Lingam, Amedeo Balbi
  • Published online:
    22 November 2024
    Print publication:
    05 December 2024
  • How did life originate? Is there life beyond Earth? What is the future of life on our planet? The rapidly growing multidisciplinary field of astrobiology deals with life's big questions. This text harnesses the authors' two decades' experience of teaching acclaimed courses in astrobiology, and adopts a novel quantitative approach towards this emergent discipline. It details the physical principles and chemical processes that have shaped the origins and distribution of molecules, stars, planets, and hence habitable environments, life, and intelligence in the Universe. By synthesising insights from domains as diverse as astronomy and physics to microbiology, biochemistry, and geology, the authors provide a cutting-edge summary of astrobiology, and show how answers to many fundamental questions are drawing closer than ever. Geared towards advanced undergraduates and graduate students in the physical sciences, the text contains more than 150 innovative problems designed to enhance students' knowledge and understanding.