WebEarth-27 is a dynamic reinvention of the DC Comics Universe, created by Roy Westerman. Combining the best elements of various timelines and continuities together, it is intended … Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen. Much of the Earth was molten … See more The history of Earth concerns the development of planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to understanding of the main events of Earth's … See more The history of the Earth can be organized chronologically according to the geologic time scale, which is split into intervals based on See more The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. The oldest rocks found on Earth date to about 4.0 Ga, and … See more The Proterozoic eon lasted from 2.5 Ga to 538.8 Ma (million years) ago. In this time span, cratons grew into continents with modern sizes. The change to an oxygen-rich atmosphere was a crucial development. Life developed from prokaryotes into See more In geochronology, time is generally measured in mya (million years ago), each unit representing the period of approximately 1,000,000 years in the past. The history of Earth is divided into four great eons, starting 4,540 mya with the formation of the … See more The standard model for the formation of the Solar System (including the Earth) is the solar nebula hypothesis. In this model, the Solar System formed from a large, rotating cloud of interstellar dust and gas called the solar nebula. It was composed of hydrogen and See more The Phanerozoic is the current eon on Earth, which started approximately 538.8 million years ago. It consists of three eras: The See more
Earth Timeline - NASA
WebJul 7, 2024 · The bottom graph shows how brain size increased over the past 3 million years—especially between 800,000 and 200,000 years ago. A large brain capable of processing new information was a big advantage during times of dramatic climate change. To construct this graph, scientists measured the brain cavities of more than 160 early … WebApr 24, 2012 · Description. This interactive module explores key events in the record of life on Earth, which stretches over three billion years. In this Click & Learn, students visit different times in Earth’s history to learn … brian troup at\u0026t
Nature Timespiral: The Evolution of Earth from the Big Bang
WebThis is the first Era to have geologic record. In this early stage of the earth, the surface changes from molten to rock. The continental plates also formed during this timeline. … WebThe earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. Emma Bernard, a curator of fossil fish at the Museum, says, 'Shark-like scales from the Late Ordovician have been found, but no … WebMar 28, 2024 · human evolution, the process by which human beings developed on Earth from now-extinct primates. Viewed zoologically, we humans are Homo sapiens, a culture-bearing upright-walking species … courtyard marriott herndon