Exploring the Boundaries of Space: Finite or Infinite?

For many, the concept of space might seem infinite, an endless expanse of darkness and emptiness. However, perspectives on the size and shape of the universe vary widely among astronomers and researchers. Some suggest a finite, spherical universe, with mind-boggling implications for the cosmos we inhabit. This article delves into the debate over the vastness of the universe and the theories surrounding it.

Finite vs Infinite Space: A Conceptual Shift

The finite universe theory poses a stark contrast to the traditional view of infinite space. According to this theory, the observable universe is just a minuscule part of a much larger, ultimately spherical structure. This theory challenges the notion that space itself is infinite in size.

Estimating the Size of the Universe: Sphere Theory

Supporters of the sphere theory—including those with a conservative estimate—argue that traveling at the speed of light to cross one side of the universe would take approximately 7 trillion years. With a higher estimate, some propose a distance of 23 trillion light years. Furthermore, there are those who believe that the universe can shrink and expand over time.

The speed of light is astonishing, equivalent to circling the Earth eight times per second. Assuming the larger estimate of 23 trillion light years, the length of the universe would be about 247 times greater than the observable universe, which is roughly 93 billion light years in diameter.

The Observable and Unobservable Universe: Unfathomable Vastness

The observable universe, estimated to contain 2 trillion galaxies, scarcely scratches the surface of the grand cosmos. Astronomers believe the entire universe could boast over 30 quintillion galaxies, each containing its own celestial bodies. Some small galaxies, such as Segue-2, house as few as 1,000 stars, while others, like IC-1011, contain over 100 trillion stars, more than the Milky Way’s 100–250 billion stars.

Counting each star in IC-1011 would take 3170900 years, a timeframe as long as the entirety of human history exists 15 times over. This pales in comparison to the potential 30 quintillion galaxies outside our observable universe.

The observable universe alone may harbor over 100 quintillion Earth-like planets, some slightly larger than our own. Factoring in the unobservable universe, which could be at least 15 million times larger, the potential exists for 20 trillion Earth-like planets for every human who has ever lived.

Challenges to Traditional Cosmological Theories

Recent discoveries, such as stars that predating the Big Bang, challenge our understanding of cosmic origins. Stars in the universe may have existed before the universe itself, with white stars (acting like volcanoes in a cosmic sense) potentially creating the observable universe's light and energy.

Notably, some astronomers propose that there never was a beginning to the universe, but rather a continuous existence. According to their theories, a Big Bang might occur every 500 years within the observable universe, with around 82 events potentially happening every single day and at least 3-4 every hour.

Conclusion

The size of space is a vast and complex question, fraught with uncertainty and intriguing possibilities. Whether the universe is finite and spherical, or infinite, the sheer magnitude of the cosmos continues to inspire awe and curiosity.

Further Reading

Explore more about the size of space, universe sphere theory, and observable universe through additional articles and research.