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Coaccretion is the first of three older sets of ideas that describe how the Moon was formed. This theory posits that the Moon and Earth were formed at the same time from a primordial accretion disk —a disklike flow of gas , plasma, dust, or particles around an astronomical object that slowly collapses inward—which would help explain the ...
Oct 12, 2010 · The Spanish flu pandemic of 1918, the deadliest in history, infected an estimated 500 million people worldwide—about one-third of the planet’s population—and killed an estimated 20 million ...
Mar 4, 2024 · In the largest ever modern whole-genome analysis from South Asia—published as a preprint last month on bioRxiv—researchers reveal new details about the origin of India’s Iranian ancestry and when ancient hunter-gatherers settled the region. The study also turns up a surprise: an unexpectedly rich diversity of genes from Neanderthals and ...
Saxons. The Saxons, sometimes called the Old Saxons, were the Germanic people of "Old" Saxony ( Latin: Antiqua Saxonia) which became a Carolingian "stem duchy" in 804, in what is now northern Germany. [1] Before any clear historical mention of Saxony as a country, "Saxons" became important during the late Roman Empire, when the name was used to ...
Koonin and Martin (2005) postulated that viruses existed in a precellular world as self-replicating units. Over time these units, they argue, became more organized and more complex. Eventually ...
Aug 27, 2020 · A study suggests much of the water originated in rocks from which Earth is built. AUDIE CORNISH, HOST: Water is everywhere on Earth - the clouds, the rain, the oceans and rivers, even our own ...
Bodies of water pooled long enough for various geochemical reactions – and possibly precursors to biochemistry – to take place, leaving the planet with a thickening atmosphere made up mostly of carbon dioxide and nitrogen. There were possibly occasional 'whiffs' of oxygen puffing up from volcanic activity, here and there.
