Greg Laughlin

Not quite 4 stars - perhaps because it was written 20 years ago and covers a lot of ground I have read about already (although I'm not claiming to understand it). A valuable lesson in timescales and size as the knowable universe both gets bigger and we see more of it. Or might be valuable if we last long enough! I really like the idea of cosmological decades where the first 10 billion is the first decade, the next 100 billion is the second and so on. Gave me a nice feel for how young the universe is at 14 billion years and the earth being four and a half billion - but I need to brush up on just how much bigger a billion is than a million. Billions frighten me a lot - think I'll order Tim Hardford's book 'How to Make the World Add Up'.… (altro)

Fred Adamsin ja Greg Laughlinin Maailmankaikkeuden elämäkerta on hieno kosmologian popularisointi. Kirja käsittelee maailmankaikkeuden syntyä ja ennen kaikkea tulevaisuutta fysiikan näkökulmasta, ja onnistuu muovaamaan erittäin vaikeista käsitteistä hyvin luettavan ja mielenkiintoisen kirjan. Kirja käsittelee niin Maan, Auringon kuin koko maailmankaikkeudenkin tulevaisuudennäkymiä olennaisia (järjettömän suuria) lukuja unohtamatta, mutta silti kovin vähän numeronmakuisesti. Kirja maalaa ajoittain vaikuttavia maailmanlopun näkymiä, ja pohtii myös mielenkiintoisesti elämän ja ihmisen selviytymismahdollisuuksia maailmankaikkeudessa. Loppua kohti yhtäläisyydet arkitodellisuuteen katoavat lopullisesti kirjan käsitellessä esimerkiksi protonien hajoamista tai kvanttitunneloitumista, mutta tämä tunne lienee kirjan rakenteessa olleen tarkoituksenakin.… (altro)

An interesting paragraph from the book; ".... the fact emerges that our universe does indeed have the proper special features to allow for our existence. Given the laws of physics, as they are determined by the values of the physical constants, the strengths of the fundamental forces, and the masses of elementary particles, our universe naturally produces galaxies, stars, planets, and life. With only a slightly different version of the physical laws, our universe could have been completely uninhabitable and astronomically impoverished." They ask why it's this way.

The vast scales of evolution in space and time are very well explained. e.g. towards the Dark Era single positron particles (the remnants of protons) will each be alone in a space 10 power 104 times larger than our present universe. Unimaginably large and empty .

The earth has existed for the cosmologically miniscule time of 4.6 billion years but at least for 4 billion of these, life has been thriving as shown by fossils in the worlds' oldest known sedimentary rocks. However, it's only in the last instants of this time that humans (and the scientific method ) have arrived and a text like this can be written.

Highly recommended as a unique book.… (altro)