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.

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 …

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.

6 days ago · Stony meteorites and iron meteorites (those composed largely of iron alloyed with nickel and sulfur) both fall on Earth today, and both types are thought to have been present …

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 …

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 …

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 …

Dec 8, 2020 · Early Earth – a strange new world The first 1.5 billion years of Earth’s history were tumultuous and set the stage for the rest of the planet’s journey. Several key events took …

Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. [4][5][6] Volcanic outgassing probably created the primordial …