Αρχική > επιστήμη > Which big bang? Rival theories of the universe’s birth

Which big bang? Rival theories of the universe’s birth

 

(Image: Mehau Kulyk/SPL/Getty Images)

http://www.newscientist.com/special/big-bang

Big bang, big bounce and inflating bubbles: stretch your mind around the expanding cosmos with New Scientist‘s in-depth coverage of how everything began

TOP STORIES
The big bang
 

Fifteen thousand million years ago, the universe that we inhabit erupted, literally, out of nothing. Everything – all matter, energy, even space and time – came into being at that precise instant
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Inside inflation: after the big bang

Without it the universe would fit on a pin head, yet this crucial event remains an enigma. Cosmologist Peter Coles gets to grips with inflation
Read more

 
Cycles of creation

Our universe may be stuck in an endless loop of death and rebirth. It’s an old idea, says Marcus Chown, but the strange power of nothingness has given it a new lease of life
Read more

 
Exploring Stephen Hawking’s Flexiverse

 

The history of the cosmos has yet to be decided. At last, a chance to play God
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Did our cosmos exist before the big bang?
 

Conceptual computer artwork representing the origin of the universe (Image: MEHAU KULYK/SPL)

What if our universe didn’t emerge from nothing, but is a recycled version of one that went before? Anil Ananthaswamy investigates
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Big bang, part 2: the second inflation

Double bubble (Image: Detlev Van Ravenswaay/SPL)

A boiling, bubble-ridden universe and a second period of inflation could have preceded the formation of atoms
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Why physicists can’t avoid a creation event
 

It wasn't always here <i>(Image: Jupe/Alamy)</i>

The big bang may not have been the beginning of everything – but new calculations suggest we still need a cosmic starter gun
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VIDEO
How the universe appeared from nothing

Movie Camera

Watch our animated explainer to find out how something can emerge from nothing
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COSMOLOGY
Astrophile: Loner galaxy is seed of giant black hole

16:49 13 July 2012

The antisocial tendencies of galaxy NGC 4178 could help us understand how the largest black holes form

 
Dark matter underpinnings of cosmic web found

IN BRIEF:  18:00 04 July 2012  | 6 comments

The dark matter skeleton that holds together the cosmic web of matter has been detected for the first time

 
Humble DNA could help decipher dark matter

THIS WEEK:  15:41 02 July 2012

With large and expensive dark-matter experiments disagreeing on what they are seeing, help could come from a few strands of DNA

What kind of bang was the big bang?

COVER STORY:  08:00 02 July 2012  | 28 comments

There’s trouble at the start of time: the theory of cosmic inflation has got way out of control. Can quantum theory and holograms tame it, asks Amanda Gefter

Astrophile: Exoplanetary bedfellows make odd couple

19:00 21 June 2012

A hot Neptune and a super Earth are locked in an embrace – but how did two wildly different worlds get so close?

Astrophile: Runaway is star of cosmic whodunnit

16:05 15 June 2012

A ménage à trois gone horribly wrong, an innocent bystander and a fleeing fugitive: these all helped solve the mystery of the Becklin-Neugebauer object

Black holes could act as cosmic Rosetta stones

THIS WEEK:  10:00 14 June 2012

A mathematical makeover means these strange objects could be used to translate between gravity and quantum mechanics

 
Cosmic climate change may have stunted black holes

IN BRIEF:  10:00 09 June 2012  | 1 comment

A warming of the early universe caused by the greediest of black holes could have stunted the growth of the rest

 
Neutrinos don’t outpace light, but they do shape-shift

17:20 08 June 2012  | 5 comments

OPERA collaboration reports second-ever instance of a muon neutrino morphing into a tau neutrino

Hawking’s ‘Escher-verse’ could be theory of everything

THIS WEEK:  18:00 06 June 2012  | 44 comments

Stephen Hawking has come up with a way to describe the universe that suggests it may have the same geometry as mind-boggling images by M. C. Escher

Dark matter, dark energy, dark… magnetism?

COVER STORY:  08:00 04 June 2012  | 6 comments

There is a new suspect in the search for the mysterious force ripping apart the cosmos, says Stephen Battersby

Read more cosmology articles

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