Beyond the Cosmos –“Worlds Utterly Unlike Anything We Can Imagine” (Weekend Feature)

The Multiverse

 

The universe we see –stars, moons, planets, galaxies– is but a small, accidental tip of an infinite cosmic iceberg. During the epoch of inflation, thought to have been triggered by the phase transition that marked the end of the grand unification at approximately 10−36 seconds after the Big Bang, the accelerating expansion of space was far more dramatic than in today’s universe, expanding at an absolutely staggering rate, tearing space asunder. During this period no objects—even two elementary particles—remained close enough to one another for long enough to interact.

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“The Unknown Question” –The End of Spacetime

Wormhole in Spacetime

 

Theoretical physicist Nima Arkani-Hamed, a professor at the Institute for Advanced Study (IAS) in Princeton, N.J., takes us past the edge, beyond Einstein, beyond space-time and quantum mechanics and the tropes of 20th-century physics, to a spectacular new vision of the cosmos. (more…)

Incredibly Weird Dark Energy –“Its Source Unknown, Location Unknown, Physics Unknown”

 

Dark Energy

 

“Dark energy is incredibly strange, but actually it makes sense to me that it went unnoticed,” said Noble Prize winning physicist Adam Riess in an interview. “I have absolutely no clue what dark energy is. Dark energy appears strong enough to push the entire universe – yet its source is unknown, its location is unknown and its physics are highly speculative.”

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Beyond the Observable Universe –“More of the Same, or Sea Monsters and Dragons?”

Hubble Ultra Deep Field

 

It’s possible that the universe isn’t uniform past what we can see, and conditions are wildly different from place to place, says Caltech astrophysicist Sean Carroll. “That possibility is the cosmological multiverse. We don’t know if there is a multiverse in this sense, but since we can’t actually see one way or another, it’s wise to keep an open mind.”

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A Fourth Copernican Revolution: “Our Universe May be One Patch of Space and Time In a Infinite Archipelago”

 

 

“By the end of this century, be able to ask whether or not we live in a multiverse, and how much variety its constituent “universes” display. The answer to this question will determine how we should interpret the “biofriendly” universe in which we live (sharing it with any aliens with whom we might one day make contact).”

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