Xlife Alternate Index

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Historical

Extreme Environments

Origins, Biology, & Conditions

Life on Mars

Life on Europa

Future Directions

 

Historical

Pre-Space Age

  • Mythological

  • Fictional

Early Space Age

  • Mar & Venus

  • Pioneer and Voyager visit the Galilean Moons

 

Extreme Environments - General Links

Life in Ocean Hydrothermal

  • Mid-Ocean Ridges

  • Hydrothermal Communities

  • Vent Bio-Chemistry

  • Hypotheses about Origins

  • Current Research

  • Links

Life in Ocean Cold Methane

  • Seeps

  • Brine Pool

  • Methane Hydrate

  • Links

Life in Antarctica
-

  • Lake Vostok

  • Microbes in the ice

  • Microbial fossils

  • Dry Valleys

  • Links

Other Extremophile
-

  • Earth's Interior

  • Thermophiliac & Hyperthermophiliac

  • Halophiles

  • Other Extremophile

  • Links

 

Origins, Biology, & Conditions

Origins of Life

  • Making Organic Compounds: Stanley Miller experiments

  • Macromolecules

  • First Organisms

  • Earliest Evidence

  • Multicellular

  • Murchison Meteorite

  • Tholins & Extraterrestrial Carbon Chemistry

  • Life from Extraterrestrial Sources

  • Extreme Environment Origins

  • Evidence for Common Origin

  • Links

Biologies of Life

  • Cells

  • Metabolism

  • Homeostasis

  • WATER

  • Growth

  • Reactivity

  • Reproduction

  • Evolution

  • Taxonomy

  • Links

Bacteria and Archaea

(Links)

  • Bacteria

  • Archaea

  • Microbiology

  • Popularizations

  • Systematics

Conditions of Life

  • Favorable Conditions on Earth for an Origin of Life

(Links)

  • Magnetosphere

  • Atmosphere & Radiation

  • Oceans

  • Volcanoes & Tectonism

  • Extinction Events

 

Life on Mars - Background, Mariner & General Links

Viking and the Biology Experiments

  • Viking

  • Biology Experiments & Official Results

  • Contrary Views and Data

Water on Mars

  • Water on Mars Now

  • Water on Mars Then

  • Evidence for Hydrothermal

  • Links

Other Planetary

  • Atmosphere

  • Vulcanism

  • Tectonics

  • Magnetic Field

  • Links

Giant Fossils

  • Giant Fossils

  • Stromatolites

  • Hunting Fossils on Mars

Pathfinder, Global Surveyor & Future Missions

(Links)


  • The Announcement

  • ALH84001: The Allen Hills
    Meteorite



  • How to know when a meteorite is from Mars

  • How to know how old a meteorite is

The Martian Meteorites: Allen Hills

  • The Evidence for Life

  • Carbonate Globules

  • PAHs

  • Possible Fossils



  • Mineral Compound Organic
    Byproducts

  • Nanobacteria



  • Debate: Pro

  • Debate: Con

  • When Science is Ambiguous

  • Links

 

Life on Europa


  • Ongoing new discoveries from the Galileo Orbiter

  • Is there liquid water under Europa's ice?

  • Wedges

  • Chaos Terrain

  • Crater evidence of liquid subsurface

Europa Closeup

  • Volcanism? Upwelling through fissures and other linear features. Tectonic processes

  • Tidal Heating

  • Radioactive decay from the core? Hot spots

  • The Mystery of the Red Coloration

  • Magnetic Field

  • Protection from Radiation

  • Future Missions, Proposed Europa Orbiter

  • Links

 

Future Directions

Titan and Other Planets and Moons

(Links)

  • Titan

  • Water (ice) on planets and moons

  • Venus

Astrobiology
-

(Links)

  • Search for Life

  • Astrobiology