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 further and thrive.

1 day ago · Fresh evidence suggests early Earth wasn’t locked under a rigid stagnant lid but was already experiencing intense subduction. Ancient melt inclusions and advanced simulations point to …

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. Gravity caused …

Nov 20, 2023 · Dive into the most dramatic events in Earth’s 4.5-billion-year history, from its birth to the emergence of humanity. How did a hellscape of molten lava transform into a lush, green, watery ...

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 remnants of …

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 …

3 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 form the earliest …

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 were anaerobic …

4 days ago · A CU Boulder-led study finds that Earth's early atmosphere could have produced key sulfur biomolecules essential for life, challenging long-held assumptions.

While Earth was in its earliest stage (Early Earth), a giant impact collision with a planet-sized body named Theia is thought to have formed the Moon. Over time, Earth cooled, causing the formation of …