TLDR: TExploring the enigma of the universe’s edge: cosmic horizons, dark energy, and the mysteries of quantum cosmology.
This article is a summary of a You Tube video “What Is Beyond Edge Of The Universe?” by Space Matters
Key Takeaways:
- The Observable Universe: The radius of the observable universe is about 46.5 billion light years, despite the universe being only 13.8 billion years old, due to its expansion.
- The Expansion of the Universe: This expansion leads to a discrepancy between the observable universe’s size and the universe’s age, making distant celestial objects appear further away.
- Cosmological Limits: Modern cosmology has yet to understand what lies beyond the observed boundary of the universe, with these limits defined by the speed of light and the universe’s age.
- The Cosmic Horizon: The distance we can observe is limited to the time light has had to travel since the universe’s formation, effectively looking back in time when observing distant objects.
- The Hubble Horizon: A theoretical point beyond which objects move away faster than the speed of light, limiting our observational capabilities.
- The End of the Universe: Theories speculate on different endings for the universe, including heat death, black dwarf formation, and black hole evaporation.
- Dark Energy: This hypothetical form of energy is believed to permeate space, accelerating the universe’s expansion and influencing its fate.
- Cosmic Voids and Structures: The universe forms complex networks of cosmic structures, with vast voids like the Eridanus supervoid being areas of intense study and mystery.
- Theoretical Models: Theories like the no boundary proposal and vacuum fluctuation model explore the origins and structure of the universe beyond traditional understanding.
- Quantum and Cosmic Connection: Theories connecting quantum physics and cosmology suggest possibilities like a quantum bridge, indicating a universe with no beginning or end in the traditional sense.
