Is the universe a rubber band destined to snap back?
In short: For decades, the prevailing scientific consensus suggested our universe would expand forever into an infinite void. However, new data from major dark-energy observatories suggests a far more dramatic and cyclical conclusion: that the cosmos may eventually reach a maximum size before collapsing inward.
The fate of the cosmos hinges on the 'cosmological constant,' a concept introduced by Albert Einstein over a century ago. For the last 20 years, many physicists believed this constant was positive, implying that expansion would continue indefinitely. Nevertheless, Cornell University's emeritus professor Henry Tye revised this framework by incorporating latest data gathered by two primary observatories: Arizona's Dark Energy Spectroscopic Instrument (DESI) and Chile's Dark Energy Survey (DES). These projects study dark energy, which accounts for approximately 68% of the mass and energy in our universe.
Tye’s calculations, published in the Journal of Cosmology and Astroparticle Physics, suggest that the cosmological constant may actually be negative. If this is true, the universe is currently nearing the halfway point of its total lifespan. The cosmos is estimated to expand for roughly another 11 billion years before reaching its maximum size. At that point, it would begin to shrink in a process known as a 'big crunch,' eventually collapsing back into a single point—a reversal similar to a stretched rubber band snapping back.
Based on these figures, the big crunch could occur in about 20 billion years, ending a universe that is currently 13.8 billion years old. This scientific tension mirrors the narrative found in Isaac Asimov’s 'The Last Question,' which explores humanity's technological leaps fueled by new energy sources to confront the ultimate limits of existence. While Asimov focuses on the philosophical pursuit of undoing universal death, modern physics seeks the literal mechanics of that end through the study of dark energy.
This shift in understanding matters because it changes our fundamental perspective on time and space. If the universe is finite in both size and duration, the 'end' is not a fading away into nothingness, but a violent structural collapse. The agreement between data from opposite hemispheres—Chile and Arizona—adds significant weight to this possibility, challenging the long-held belief in endless expansion.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: The Strangest Question at the end of the Universe
- Also: Universe may end in a “big crunch,” new dark energy data suggests
To cite this card, link to https://intellectplus.co.uk/app/ideas-the-strangest-question-at-the-end-of-the-universe.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
