Philosophy

Friday, May 06, 2005

 

The Universe: A Timeline

Source: Wikipedia [http://en.wikipedia.org/wiki/Timeline_of_the_Universe]
1 The Big Bang and matter formation
- The universe began 13.7 billion years ago in the Big Bang. The chaotic inflationary, oscillating, eternal universe, multiverse, vacuum fluctuation, and quantum gravity models are false.
1.1 The Primordial Age - from 0 years to 300,000 years
1.1.1 The Planck Epoch: 10^-43 seconds
1.1.2 The Inflationary Epoch: 10^-37 seconds
1.1.3 The Grand Unification Epoch: 10^-35 seconds
1.1.4 The Electroweak Epoch: 10^-12 seconds
1.1.5 The Hadron Epoch: 10^-6 seconds
1.1.6 The Lepton Epoch: 1 second
1.1.7 The Epoch of Nucleosynthesis: 3 minutes
1.1.8 The Reionization Epoch: 300,000 years

2 Galaxy and star formation
2.1 The Stelliferous Age - from 10^6 to 10^14 years
2.1.1 The Matter Domination Epoch: 500,000 years
2.1.2 The Galaxy/Star formation Epoch: Between 100,000,000 and 1,000,000,000 years
2.1.3 Formation of the Solar System: 9,100,000,000 years
2.1.4 Present Time: 13,700,000,000 years (according to NASA's Wilkinson Microwave Anisotropy Probe project (WMAP))
- At this point the universe is 13.7 billion years old and 27.4 billion light years in diameter. The edge of the cosmic light horizon is 13.7 billion light years from Earth. The present distance (comoving distance) to the edge of the observable universe is larger because the universe has been expanding; it is estimated to be about 78 billion light years. Therefore, the comoving volume of the known universe is equal to about 1.9 x 10^33 cubic light years, based on the assumption that the universe is perfectly spherica. The observable universe contains about 70 sextillion (70 x 10^22) stars, organized in about 10 billion galaxies, which themselves form clusters and superclusters.
2.1.5 End of the Stelliferous Age: 100,000,000,000,000 years

3 Near-term future of the Universe - different scenarios
3.1 The Big Rip
3.2 The Heat death of the Universe
3.3 The Big Crunch

4 Long-term future for a long-lived Universe
4.1 The Degenerate Age - from 10^14 to 10^40 years
4.1.1 Galaxy and Star Formation Ceases: 10^14 years
4.1.2 Planet are Flung from Orbits: 10^15 years
4.1.3 Stars are Flung from Orbits: 10^16 years
4.1.4 An estimated 1/2 of Protons Decay: 10^36 years
4.1.5 All Protons Decay: 10^40 years

4.2 The Black Hole Age - from 10^40 years to 10^100 years
4.2.1 Black Holes Dominate: 10^40 years
4.2.2 Black Holes Disintegrate: 10^100 years

5 Ultimate fate for a long-lived Universe
5.1 The Dark Age - from 10^100 years until 10^150 years
5.1.1 All Black Holes now Disintegrated: 10^150 years

5.2 The Photon Age - from 10^150 years until the Distant Future
5.2.1 The Universe Achieves Low-Energy State: 10^1000 years and beyond




<< Home

Archives

2005-05-01   2005-05-08   2005-05-15   2005-05-22   2005-05-29   2005-09-04   2005-09-11   2005-10-30   2005-11-06   2005-12-25   2006-01-01   2006-01-08  

This page is powered by Blogger. Isn't yours?

eXTReMe Tracker