Since then, the combination of Earth's distance from the Sun, its physical properties and its geological history have allowed life to emerge, develop photosynthesis, and, later, evolve …

4 days ago · When the early Earth’s magma ocean crystallized 4.4 billion years ago, the deep mantle trapped an ocean’s worth of water, scientists say.

Earth came together (accreted) from the cloud of dust and gas known as the solar nebula nearly 4.6 billion years ago, the same time the Sun and the rest of the solar system formed.

The early Earth experienced frequent impacts from asteroids and meteorites and had much more frequent volcanic eruptions. There was no life on Earth for the first billion years because the …

Jul 29, 2025 · More than 4.5 billion years ago, long before human minds could contemplate time itself, a cloud of cosmic dust and gas swirled in the vastness of a young solar system. The …

6 days ago · Earth - Accretion, Formation, Core: As the gas making up the solar nebula beyond the Sun cooled with time, mineral grains are thought to have condensed and aggregated to …

Early Earth atmospheres (> 3 billion years ago) did not contain the 21% oxygen content that we have today. When life on Earth originated (~ 3.5 billion years ago) the first prokaryotic cells …

It was radiometrically dated at 4.01 billion years old, making it the oldest known Earth rock. This rock provides evidence of how explosive the impacts were during this period in order for …

Jul 10, 2025 · Earth started out as a ball of liquid fire, its newborn surface closer to a lava lamp than the calm continents we know today. Those incandescent beginnings happened 4.5 billion …

Jun 29, 2007 · Precambrian time spans almost nine-tenths of Earth history, from the formation of the Earth to the dawn of the Cambrian Period. It represents time so vast and long ago that it …