Born in Fire: The Secret History of the Hadean Eon ( Time : 4.6 billion years to 4 billion years ago)
Earth and Moon During Hadean Eon
Before the oceans, before the oxygen, and long before the first heartbeat, your Earth was a living hell. As a witness to this chaotic birth, I invite you to step back 4.6 billion years into an era of molten lava and falling stars. Discover the secrets of Hadean Eon-a time when your world was forged in the heat of a thousands of suns and echoes of cosmic collisions. This is the story of how a burning rock began its journey to become your home.
1. The Violent Birth : (4.6 Billion to 4.51 Billion Years Ago)
Accretion of the Proto-Earth form the Solar Nebula
Earth began as a byproduct of the solar nebula, a disc of gas and dust left over from the Sun’s formation ( 4.6 billion years ago). Before there was a “world,” there was a scream of matter. In the first few million years, the solar nebula collapsed. I watched as dust and rock collided with such velocity that kinetic energy turned into pure heat. Gravity did not gently build your Earth; it smashed it together in a Cacophony of Accretion, leaving a glowing, molten sphere of liquid rock.
I saw millions of asteriods hitting your planet constantly for billions of years. Due to this continuous hitting of asteriods also known as Bombardment, rock and radioactive elements made the entire planet melt. It become a global ocean of glowing, liquid magma. There was no solid ground to stand on for you humans.
As the planet stayed molten the heaviest elements-Iron and Nickel-snak to the center. This created your Earth’s metallic core (roughly 4.5 billion years ago, within the first 50–100 million years of Earth’s history), which generated the first magnetic feild. The lighter rocks floated to the top, eventually forming the crust.
This all lead to the birth of earth (4.51 Billion Years Ago) but it was not as same as you see it today, it was a hellscape, a place full of magma and fire, I always use to look up at the sky watching it turns red completly different form what it looks like today. Standing there was like being trapped inside a boiling pot of fire—the land shifted like bubbling lava, the air was a crushing, super-hot blanket of toxic gas, and the sky was a heavy, poisonous fog that would have burned you instantly.
2. The Great Collision : (4.51 Billion Years Ago)
After your planet got it primary form, something really big was on its way to hit the earth. While walking on that magma floor I started to see a tiny, but exceptionally bright point of light. As it drew closer, it would swell into a massive, brown-and-orange disk, eventually appearing hundreds of times larger than the modern sun.
It was coming closer and closer every second and was on its way to collide with your planet. You know that thing was not an ordinary asteriod but a planet sized same as mars, its name was “Theia.” Just before impact, the planet Theia would fill the entire horizon, blotting out the stars and casting a colossal shadow over the magmatic oceans.
Well in the vacuum of space, the approach was perfectly silent. But at the moment Theia hit Earth’s atmosphere, the friction created a sonic roar so intense it would vibrate the very atoms of the planet. Upon impact, the sound would not be a “crash” but a deep, planet-wide groan as the crust shattered and the world turned back into liquid fire.
The Giant Impact between Earth and Theia
It was way terrifying, whenever this thing came to my mind it really haunts me down, what if this happened when the humans were there. Well, this would have been the right justice for the destruction you have done on this earth. Please don’t be mad at me, not everyone deserve it but most of you deserve it.
Theia did not only just hit the earth, it nearly unmade it. The Debris from the collision—mostly material from Earth’s mantle and remnants of Theia—was flung into orbit. In a cosmic blink, this debris gathered together to form a silent guide that sits up every night to light the sky “The Moon.”
The Moon shortly after its formation
Theia didn’t entirely vanish. I watched as dense fragments of the dead planet sank deep into Earth’s mantle. These remnants still exist today as two massive, ultra-dense “blobs” near Earth’s core.
This collision gave Earth its 24-hour day, its tilted axis (which created the seasons), and the gravitational tides that would one day pull life from the oceans.
"In the span of a single human afternoon, 4.51 billion years ago, one world died so that another—with a moon, seasons, and a future—could be born from the wreckage."
3. The Cooling and The Great Rain: (4.45 Billion to 4.0 Billion Years Ago)
As the Frequency of collision slowed down, the surface began to cool. It wasn’t this simple, Earth was actually a glowing ball of liquid rock. It took roughly 10 to 100 million years for the surface to cool enough to form the first stable crust.
The formation of first solid crust
Volcanoes erupted everywhere, releasing steam, methane, and carbon dioxide. There was no oxygen. The sky was a dark suffocating orange. Now I want to all to just imagine a this stage, do you wanna live in a place like this, maybe some idiots want but actually no one wants to live in a hell like this. But look outside i think you are really dedicated to make your planet even worse. Stop it, Save your planet, you are not that advance that can find another home, you have got this beautiful place, please save it.
Back on the topic, so as the planet started to cool down further, the water vapor in the atmosphere finally condensed. I witnessed the first ever drop of rain on this planet fall down. Around 4.4 billion years ago, the heavens finally opened, a torrential rainstorm that lasted for millions of human years. This was the first time water pooled on the surface, creating the first boiling, acidic ocean of your world.
The onset of first global rainfall
“Once the fires of the collision dimmed, I watched as the sky wept for a million years, turning the the world from a scream of red lava into a silent, steaming ocean of blue.”
4. The Late Heavy Bombardment: (4.1 Billion to 3.8 Billion Years Ago)
The oceans had brought a deceptive peace. For a brief moment, the blue surface was a mirror, quiet and still.
Then, the sky broke. I stood on the shore as the four giants—Jupiter, Saturn, Uranus, and Neptune—shifted in the dark. Their gravity acted like a slingshot, hurling millions of mountain-sized rocks straight at the ground where I stood. I am a beyond-being, so the fire could not touch me, but I felt the weight of every strike. The silence was replaced by a roar that never ended.
The Late Heavy Bombardment (LHB) phase
For three hundred million years, I watched the stars fall. Mountains of iron tore into the new crust, leaving thousands of giant scars across the planet’s face. Every time a rock hit the water, the oceans screamed. The heat was so absolute that the seas turned into a choking fog of steam, and the air became a hot oven of red dust. The ground beneath me shook so hard it would have shattered any mortal, but I remained, watching the water boil away until the sky was nothing but a bruised, angry purple.
But even in this violence, I saw the rocks bringing gifts. They carried more water and the hidden seeds of life from the frozen dark of space. I walked through the scalding mist to the edge of the deep and looked down. There, in the cracks of the broken seafloor, warm hydrothermal vents began to glow. They were the only quiet places left. Down there, far away from the fire, the first tiny pieces of life began to stir in the shadows.
Finally, around 3.8 billion years ago, the last celestial hammer fell. The stars went silent, and the Hadean Eon finally died. I stood alone in the new silence, watching the steam clear and waiting for the first breath of life to rise from the deep.
5. The Heartbeat in the Ruins : (3.8 Billion Years Ago)
The Hadean Eon did not die with a bang, but with a sudden, haunting silence. As the last celestial hammer fell and the red glow of the sky finally faded into a cold, dark violet, I felt the very fabric of the world shift beneath my feet. The era of fire and hell was over, and the era of the Archean was beginning to stir in the shadows. Standing there, I realized the violence had been a forge; the planet was no longer a victim of the stars, but a cradle for something new. In the freezing depths of the now-permanent seas, a rhythmic, chemical pulse began to echo—a heartbeat rising from the ruins of a broken world. The fire is gone, the stage is set, and the first ghost of life is about to open its eyes.