Diverse life forms may have evolved earlier than previously thought

This May Be the Oldest Known Sign of Life on Earth

NASA Astrobiology

What were the earliest known organisms like, and when did they ... | Filo

The timeline of early life on Earth is debated, with the earliest irrefutable evidence of life dating to about 2.7 to 3.5 billion years ago, while some scientists suggest life may have originated as early as 3.7 to 4.5 billion years ago. Scientists use fossil evidence and chemical signatures to date the origins of life, but the record is complicated by the way Earth's ancient rocks have been weathered and recycled over billions of years. | Space Advances

Origins of Life on Earth - Biology Online Tutorial

The Wonders of the Cosmos on Instagram: "Life on Earth evolved from primordial oceans around 4 billion years ago, where organic molecules formed and eventually assembled into self-replicating structures. The first life forms were single-celled organisms like prokaryotes, which thrived and shaped Earth's chemistry. With the development of photosynthesis, oxygen was released, paving the way for complex life. Over time, life evolved through natural selection, genetic drift, and other mechanisms, le