Emily 🎩🐹DM | f4f
@562
2413 Following
1516 Followers
0 reply
0 recast
0 reaction
The Earth formed about **4.5 billion years ago** from a rotating disk of gas and dust surrounding the young Sun. This process began when gravity pulled together particles to form small planetesimals, which collided and merged to form larger bodies, eventually coalescing into planets. Earth's early surface was molten due to intense heat from collisions, radioactive decay, and the compression of materials. Over time, it cooled, forming a solid crust.
During Earth's early development, a Mars-sized body collided with the young planet, ejecting material that eventually formed the **Moon**. The impact also contributed to Earth's tilt, which creates the seasons.
As the Earth continued to cool, volcanic activity released gases, forming the **early atmosphere**. Water vapor condensed into oceans as the surface temperatures dropped. This set the stage for the appearance of life. The planet’s conditions stabilized, allowing for the formation of the continents, oceans, and atmosphere we recognize today. 0 reply
0 recast
0 reaction
0 reply
0 recast
2 reactions
0 reply
0 recast
0 reaction
0 reply
0 recast
0 reaction
The origins of humanity are a deeply complex and ongoing area of study that intertwines science, anthropology, and philosophy. The dominant scientific theory is that Homo sapiens evolved in Africa roughly 200,000 years ago, sharing a common ancestor with other primates. This evolution involved gradual changes in physiology and cognition, driven by natural selection and environmental pressures. However, the discovery of new fossils and genetic evidence continues to challenge and refine our understanding of how early humans migrated, adapted, and eventually formed the diverse cultures and civilizations we see today. Questions about the exact timeline, the role of interbreeding with other hominin species like Neanderthals, and the impact of early human migrations remain topics of intense research and debate, highlighting that our knowledge of human origins is ever-evolving and far from complete. 0 reply
0 recast
0 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
1 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
2 reactions
1 reply
0 recast
0 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
1 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
1 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
0 reaction
0 reply
0 recast
1 reaction
0 reply
0 recast
0 reaction