The species disappears after a few tens of thousands of years in space.ħ88 million years ago: The Jacks re-appear after having disappeared for unknown reasons their new civilization collapses after 112,000 yearsħ80 million years ago: the Halogenics (Interstellar Civilization HIE282NPE) form a very large number of worlds to meet their peculiar biochemistry. Apart from these objects, absolutely nothing is known of the nature or origin of this species.ġ.1 billion years ago: The Jacks, a species of floaters occupying Jovian planets, appear for the first time, but their civilization is short-lived and cyclical. Towards the end of the eon, animals and plants first evolved.ġ.45 billion years ago: The Archivists released their enigmatic diamondoid information spheres. Eukaryotic lifeforms first appeared during the earlier part of the eon, followed by the development of Earth's plate tectonics into the modern regime and the first fungi. Homeworld: Little is known except possible Planet Typeīiology: Little information except possible EvoltypeĢ.5 GYA: TERRAN PROTEROZOIC EON The oxygen level in the atmosphere of Earth began rising at the beginning of this eon, triggering the Great Oxidation Event that caused a severe mass extinction and the Huronian glaciation, but also enabled the emergence of aerobic lifeforms afterward. Interstellar Civilization HIE236PPE (disappeared 2-3 GYA) Life on the Archean Earth consisted of relatively simple bacteria and archaea cyanobacteria represent some of the organisms that could be found during this time. The planet's cooling interior permitted a primitive form of plate tectonics to begin. Orion's Arm Tranquility Calendar Conversion Toolġ3.7 GYA (GigaYears Ago) (BIG BANG - FORMATION OF THE KNOWN PHYSICAL UNIVERSE) Big Bang + Several seconds - hypothetical Alpha civilisation.īig Bang + 380,000 years - recombination era - the Universe becomes transparentīig Bang + 100 million years - formation of first starsġ3.7 TO 4.6 GYA: PRETERRAN EON Before the formation of the Solar System and of Earth.Ĥ.6 GYA: TERRAN HADEAN EON Formation of the Solar System and Earth, outgassing of first atmosphere and oceans, bombardment by left-over planetesimals and debris, volcanism and formation of first continents, evolution of first microorganisms.Ĥ.0 GYA: TERRAN ARCHAEAN EON On Earth, most of the planetary surface was covered in a single global ocean, and the sky was shrouded by a haze layer that thrived in the carbon dioxide-rich reducing atmosphere.
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