Friday, October 05, 2018
Scientific American: "Wonders of the Cosmos"
The editors of Scientific American offer a challenging e-book “Wonders of the Cosmos” (2018).
There is an introduction by Andrew Gawrelewski, “Mysterious Universe”.
There are four sections: (1) “How did the universe begin”?; (2) “Cosmic Cartography”; (3) “”Life Wild Phenomena”; (4) “Life Off Earth”.
The book opens with an essay by Niayesh Afshordi et al “The Black Hole at the Beginning of Time”. The essay offers the idea that our Universe is a three-dimensional shell around a four-dimensional black hole, after an implosion. There is an interesting image “Before the Big Bang” at the 7% page.
Adam G. Riess and Mario Livio discuss “The Puzzle of Dark Energy” which exists essentially because of the asymmetric weak nuclear force.
Npam I. Libeskind and R. Brent Tully discuss “Our Place in the Cosmos” with particular attention to how gravity has a locus with out own galactic cluster Laniakea, and this could predict the eventual cold end of the Universe (ours, at least). It could also explain emptiness like the Bootes void.
Juan Maldacena discusses “Black holes, wormholes, and the secrets pf quantum space time.” Maybe the wormhole would give the possibility of a teenage Clark Kent to live among us.
In the last section, Lee Billings discusses “The Search for Life on Faraway Moons”. He mentions Triton but does not seem to discuss Titan.
Kimberly Cartier and Jason T. Wright bring a gospel, “Strange News from Another Star”, that is, Boyajian’s Star (or Tabby’s Star), about 1450 light years away. Is there an alien megastructure, a Dyson’s Sphere, around the star? I want a hotel room with a view, and Internet access (assuming Mark Zuckerberg is an alien himself and has conquered the speed of light).
Frank Postberg et al discuss “Under the Sea of Encedalus” with some persuasive arguments for some kind of primitive bacteria-like life around the vents. Titan is a much more interesting place geographically.
Christopher McKay and Victor Garcia explore how to look for life on Mars.
Rene Heller discusses the idea of a “superinhabitable earth II”. It’s likely such a planet might be a little larger than Earth, and around an unusually stable M star (old enough to give enough time for life) or perhaps a main sequence star a little smaller than our Sun. A bigger planet would have fewer mountains, likewise a large water surface, and a somewhat thicker atmosphere (maybe people could fly like birds, as in Arthur C. Clarke’s “Childhood’s End”) – like the crow that keeps visiting my balcony and watching me as if I were his own “human”.
In the video above, note how the surface of a black hole (3D to 2D) is viewed as a hologram saving all the information falling on it.