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Fate of the universe
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Heat death, big rip or big crunch.
Possible endings: heat death (expanding forever to cold, dark state), Big Rip (dark energy tears all apart), Big Crunch (recollapse), or vacuum decay. Current data favour eternal expansion.
Stars burn out in 10¹⁴ years.
Depends on dark energy's nature.
In more detail
The fate of the universe depends on its density and dark energy. Under current observations, it will continue expanding and cooling, becoming increasingly empty.
Real-world uses
- Cosmologists model possible futures of the universe.
- These models test our understanding of dark energy.
- Cosmologists consider possible futures for the universe based on how dark energy changes over time.
Open the interactive lesson, with simulation and quiz →
Frequently asked questions
Will the universe end in a Big Crunch?
Not with current evidence, since dark energy drives accelerating expansion.
Could it end differently?
Possible scenarios include the Big Rip, but these depend on uncertain physics.
Is the fate of the universe known?
No. The fate depends on the nature of dark energy, which is not yet understood, so the predictions remain uncertain.
Related topics in Particle Physics & Cosmology
Dark matter · Dark energy · Critical density · Exoplanets · Habitable zone · Astronomical distances