Our Earth is about 4.5 billion years old and, through careful work, scientists have pieced together a timeline of its past.

A growing body of research suggests that cosmic dust, originating from asteroid collisions and comet disintegration, may have ...

The way amino acids are synthesized has changed during the history of Earth. The Hadean eon represents the time from which Earth first formed. The subsequent Archean eon (approximately 3,500 ...

Over time, the Earth cooled, causing the formation of a solid crust, and allowing liquid water on the surface. The Hadean eon represents the time before a reliable (fossil) record of life; it began ...

The Precambrian eon is vast, almost unimaginably so ... this includes all of geological time prior to the Cambrian period. Hadean Era (4,550-3,850 mya) The Precambrian's oldest era, the Hadean ...

That's exciting, Tarduno said, because that timeframe represents Earth's very first eon, the Hadean. There are no rocks from the Hadean left on Earth, and the planet's early atmosphere is a mystery.

- the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); ...

THE discovery of the remnants of enormous ancient scorpions has left scientists with more questions than answers. An international team of paleontologists uncovered evidence of eight-foot-long ...

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Eon Latest Update: Hyundai Eon has been discontinued and the car is out of production. Eon Specification: The Eon is Hyundai's entry-level hatch. It is the perfect blend of style, performance and ...