Biological life on Earth is traditionally defined in terms of carbon chemistry, liquid water, and narrow thermodynamic ranges. However, plasma physics, space physics, and electromagnetic field theory demonstrate that large-scale, long-lived, phase-stable environments exist that are not governed primarily by neutral fluid dynamics. Earth’s ionosphere, magnetosphere, and coupled plasma systems form coherent electromagnetic structures, including ducts, filaments, cavities, and resonant regions that persist over time and space. This paper proposes a generalizable biological framework in which life is classified not only by molecular substrate but by coupling to electromagnetic and plasma coherence. A field-based definition of habitability is introduced, extending biological possibility into environments where energy, geometry, and phase stability are controlled by electromagnetic structure rather than chemical equilibrium alone. This framework integrates known plasma self-organization, biophysical electromagnetism, and nervous-system phase regulation into a unified theory of coherent life. coherent biology, plasma life, electromagnetic ecology, ionosphere, magnetosphere, field-based life, bioelectromagnetics, plasma self-organization, neural coherence, phase locking, astrobiology, space plasma, field-coupled organisms, hybrid biology, electromagnetic habitats, coherent fields

coherent biology, plasma life, electromagnetic ecology, ionosphere, magnetosphere, field-based life, bioelectromagnetics, plasma self-organization, neural coherence, phase locking, astrobiology, space plasma, field-coupled organisms, hybrid biology, electromagnetic habitats, coherent fields