Earth Log 0003 The Origins of the Universe

EARTH LOG ENTRY

EARTH LOG METADATA

EL-ID: 0003
Title: The Origins of the Universe
Author: Marquez Comelab

Date Published: 
    - Date (Gregorian): 2026-04-17
    - Cosmic Time ≈ 13,800,000,000

Location: Planet Earth → Europe → Belgium

Cosmic Address: Pisces–Cetus Supercluster Complex → Laniakea Supercluster → Local Group → Milky Way →  Orion Arm → Local Interstellar Cloud → Solar System → Planet Earth

Language: English
Medium: Text
Series: Earth Log

Purpose: A chronological record of human civilization written during the lifetime of the author and preserved on the BitcoinSV (BSV) Blockchain.

Origin BSV Pay Address: 12ifVfVfPxBPshVz3t1ZaixDzsBmH4ZJ3f
Origin BSV Ordinal Address: 12Ub5i2MXLcBwTed8ssm4VGDAdkfpdGJfo
BSV Blockchain Transaction ID, TXID: Pending (assigned after BSV Blockchain inscription)
BSV Tipping Address: 1GtDW5k7UTQMrXEGPDkDfCTGWvFi1RSBED

Subject Timeframe
    - Years Ago:
        Start: 13,800,000,000
        End: 4,510,000,000
    - Cosmic Time:
        Start: 0
        End: 9,290,000,000
    - Gregorian Date:
        Start: N/A (pre-Earth / cosmological epoch)
        End: N/A (pre-human history)

CLASSIFICATION

Category: 
	Cosmos
Questions: 
	• How did the universe begin?
	• How does the universe work?
Tags: 
	• astronomy
	• physics
	• science
	• scientific discovery
	• knowledge systems
	• evidence
	• reason
	• universe
	• cosmology
	• galaxies
	• solar system
	• earth
	• moon
	• scientific understanding
Context:
	Early Universe
Series: 
	• Mapping the Universe
Cosmic Narrative Stage: 
	• Universe


References: 
None
Corrections: 
None 

Copyright © 2026 Marquez Comelab. All rights reserved.

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EARTH LOG #0003

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COMMENT: 

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In the previous entry I began recording events unfolding during my lifetime — conflicts between nations and the uncertainties of the present moment. Those events belong to the immediate history and concerns of our species, which I will continue to document in future logs. In this entry, however, I step much further back in time to describe what we currently understand about our origins, beginning with the origins of the universe.

Because Earth Logs will move between subjects that exist on vastly different time scales — from the birth of the universe billions of years ago to events occurring in the present day — readers may sometimes wish to keep track of the timeframe associated with the topic being discussed.

For this reason, each Earth Log includes a metadata field called **Subject Timeframe**. Readers who wish to quickly orient themselves within the timeframe of the topic of an Earth Log's may refer to this tag.


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ENTRY: 

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Human beings did not appear suddenly in the universe. Our species emerged from a long chain of cosmic events stretching back billions of years. By the early twenty–first century, scientists had developed models that attempt to explain how the universe itself began and how the structures within it gradually formed.

What follows is a brief description of the dominant scientific understanding of my time regarding the origins of the universe and the formation of the world on which I live.


THE BEGINNING OF THE UNIVERSE

According to the dominant scientific understanding of humanity at this time, the universe began approximately 13.8 billion years ago in an event commonly referred to as the Big Bang. Contrary to what the name might suggest, this was not an explosion occurring at a particular point in space. Rather, space and time themselves began expanding from an extremely hot and dense initial state. In this scientific view, time itself did not exist before this event; it began as part of the universe's expansion. In those earliest moments there were no stars, no galaxies, and no planets—only energy, elementary particles, and the physical laws that govern their interactions.

As space expanded, temperature and density gradually decreased. Within a few minutes, nuclear reactions created the first atomic nuclei—mostly hydrogen and helium. For hundreds of millions of years afterward the universe remained dark, filled with enormous clouds of gas but no stars. Slowly, gravity began drawing matter into denser regions. These regions eventually collapsed, giving birth to the first stars and galaxies.

From these first stars and galaxies would emerge the later generations of stars and planetary systems that eventually made possible the existence of worlds like Earth—and, billions of years later, observers capable of asking how the universe itself began.


THE FORMATION OF GALAXIES

Galaxies are immense collections of stars, gas, dust, and dark matter bound together by gravity. Some galaxies contain hundreds of billions of stars.

According to the scientific models developed during my era, galaxies began forming a few hundred million years after the Big Bang. Small clumps of matter gradually merged and grew larger through gravitational attraction. Over billions of years these structures evolved into the galaxies we observe today.

Our own galaxy is known as the Milky Way. It is a spiral-shaped galaxy containing hundreds of billions of stars. The Sun — the star that provides energy to Earth — is only one of those many stars.

From the perspective of an individual human life, galaxies appear permanent and unchanging. In reality they evolve slowly over immense periods of time, merging with other galaxies and forming new generations of stars.

Within one of the spiral arms of the Milky Way galaxy, in a region containing clouds of gas and dust left behind by earlier generations of stars, another process of formation began billions of years later. From this material, a new star and its surrounding planetary system would eventually emerge. This system would become the environment in which the planet Earth — and later human civilization — would arise.


THE BIRTH OF THE SOLAR SYSTEM

Roughly 4.6 billion years ago, a region within the Milky Way galaxy containing gas and dust began to collapse under the force of gravity. This collapsing cloud formed what scientists call a protoplanetary disk — a rotating disk of material surrounding a growing star.

At the center of this disk, pressure and temperature increased until nuclear fusion began. This marked the birth of our star, the Sun.

The remaining material in the surrounding disk gradually began to collide and combine into larger bodies. Through countless impacts over millions of years, these bodies grew into planets, moons, asteroids, and other objects.

This system of objects orbiting the Sun is known as the Solar System.

Eight major planets formed within this system. Some, such as Jupiter and Saturn, became enormous gas giants composed primarily of hydrogen and helium. Others, including Mercury, Venus, Earth, and Mars, became smaller rocky planets.


THE FORMATION OF EARTH

Earth formed approximately 4.54 billion years ago through the accumulation of countless smaller objects known as planetesimals. Early in its history, the young planet was extremely hot due to frequent collisions and the heat produced by radioactive materials within its interior.

During this early period, Earth was likely covered with molten rock. Over time, the surface gradually cooled and solidified, forming the first crust.

Volcanic activity released gases into the atmosphere, and water eventually accumulated on the planet's surface, forming oceans. These oceans would later play a crucial role in the emergence of life.


THE ORIGIN OF THE MOON

One widely accepted scientific explanation for the origin of Earth's Moon is known as the giant impact hypothesis.

According to this model, early in Earth's history a large planetary body — sometimes referred to by scientists as Theia — collided with the young Earth. The impact was so powerful that enormous amounts of material were ejected into space.

Some of this material eventually gathered together under the influence of gravity and formed the Moon.

The presence of the Moon has had significant effects on Earth. Its gravitational influence stabilizes the tilt of Earth's rotational axis and produces ocean tides. Many scientists believe these effects may have played an important role in the long-term stability of Earth's climate.

This event is believed to have occurred approximately 4.51 billion years ago.


HUMANITY'S PLACE IN THIS STORY

From the perspective of modern science, the appearance of human beings is understood to be the result of a long chain of events spanning billions of years.

Stars formed within galaxies. Around one of those stars, a system of planets emerged. On one of those planets — Earth — conditions eventually became suitable for life.

At some point in this long history, life appeared. Over immense periods of time, it developed into increasingly complex forms.

Much later, a species capable of reflection and inquiry emerged: humans.

The knowledge described in this entry represents humanity's best attempt, as of the early twenty–first century, to understand our cosmic origins.

Future readers may possess knowledge that greatly improves upon these explanations. Some of our conclusions may eventually prove incomplete or incorrect.

Nevertheless, this is how we currently understand the story of the universe that produced us. The events described here form the deep background to all future Earth Logs, which will record a brief moment in the long history of this universe: the time during which human civilization existed and reflected upon its place within it.



— Marquez Comelab
Earth Log Project
Planet Earth
Year 2026