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Ions can be created, by either chemical or physical means, via ionization. Theia collided with another planetary-mass object, Gaia (the early Earth) around 4.51 billion years ago.Shape of the Universe - Photo GN-z11 high-redshift galaxy found in the constellation Ursa Major, and is currently the oldest and most distant known galaxy in the observable universe - 13.4 billion years old. That was when the Moon Formed, the Moon was twice as close then it is now causing 10,000 ft. Age of the Earth is approximately 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%).



Dinosaurs are a diverse group of Reptiles of the clade Dinosauria that first appeared during the Triassic period, which was a geologic period and system which spans 50.9 million years from the end of the Permian Period 252.17 million years ago (Mya), to the beginning of the Jurassic Period 201.3 Mya.As a rule, to be considered a living fossil, the fossil species must be old relative to the time of origin of the extant clade. It has been defined as "short-term (hours or days to kyrs) locally, regionally, or interregionally pervasive changes in the ecological, biogeographical, and/or evolutionary character of biotas that are isochronous or nearly so throughout their range".Bioevents either relate to diversification of a particular fossil group or a reduction, these may equate to speciation events or extinction events, or may only represent migration.Timeline of Plant Evolution (wiki) - Photosynthesis Horseshoe Crab are marine arthropods invertebrates of the family Limulidae, suborder Xiphosurida, and order Xiphosura.