That’s why so much of the book concerns all the amazing things we know that are at best tangential to my research, and many ideas about dark matter too. The K-Pg clay layer was meticulously studied in almost 40 locations around the globe. (InsideClimateNews)In order to establish her theory, she has to take a detour to explain the composition and history of the Universe to readers. More significantly, he fails to mention that even that research is only a small part of the more extensive introduction to dark matter and the cosmos that my book contains.The first thought that crossed both our minds when reading the title of this book was: “Oh, no, not again, another outlandish proposal for the extinction of dinosaurs….” However, we were relieved to find that, right from the start, Randall dismisses almost all connections between dark matter and the mass-extinction event that wiped out the dinosaurs. She reviews the observations of geologists and paleontologists confirming that a big object hit the Earth 66 million years ago and as a result at least 75 percent of life on the Earth died, including the dinosaurs.Although most of the book concerns impacts from meteoroids, the author ends with a cautionary note about a possible sixth extinction unrelated to celestial bodies:Even just a kilometer-wide meteoroid, the author points out, would do global damage, creating extreme winds, huge tsunamis, tidal waves, massive earthquakes, and trillions of tons of material ejected into the atmosphere and then rained down upon the Earth.Fill in your details below or click an icon to log in: It included detecting huge amounts of the rare metal iridium in the clay of the K-Pg geologic boundary marking the period of the dinosaur extinction. The mammal extinction rate of the last 500 years has been about 16 times higher than normal, and in the last century the rate has been elevated by a factor of 32. "… , )) ") Read more. “Many scientists today think we are currently undergoing a sixth mass extinction – of manmade origin. The only known sources for the state of these materials are meteoroid impacts and nuclear explosions. The focus was still on fundamental physics. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. . )The description of how scientists solved the mystery of the dinosaur extinction is fascinating. Amphibians in the last century have died off at a rate nearly 100 times higher than in the past, with 41 percent currently facing the threat of extinction, while bird extinctions in this same time frame have exceeded the average rate by a factor of about 20. . Dark Matter and the Dinosaurs illuminates the deep relationships that are critical to our world as well as the astonishing beauty of the structures and connections that surround us. --This text refers to an alternate kindle_edition edition. . Dark Matter and the Dinosaurs: ... Jim Al-Khalili, in a Wall Street Journal book review, describes the book as "a cracking read, combining storytelling of the highest order with a trove of information" on the underlying science. Excerpts and links may be used, provided that full and clear credit is given to Rhapsody In Books with appropriate and specific direction to the original content.The only survivors would have been living creatures that could hide – through hibernation or otherwise.Tyrannosaurus rex holotype specimen at the Carnegie Museum of Natural History, Pittsburgh.“Incredibly, the rate of temperature and changes in pH (which measures acidity) seems to have been comparable at that time [the P-Tr extinction] to what they are today. . I wrote that the term “transparent matter” would be a better name than “dark matter,” since as with all transparent matter, light just passes through. Sounds fascinating — esp.
Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe by Lisa Randall Ecco, 2015 hardcover, 432 pp., illus. But having done more conventional particle physics all my life—the study of the building blocks of familiar matter such as the paper or screen on which you’re reading this—I’ve found it refreshing to probe into what is known—and what soon will be known—about the dark world too, as well as the implications of basic physical processes for the Solar System and for the Earth.You can enter multiple addresses separated by commas to send the article to a group; to send to recipients individually, enter just one address at a time.Furthermore, though Krauss notes a low citation count for a short paper I wrote concerning the possible connection of a dark matter disk to meteoroid strikes, he neglects the larger number of citations for my research on the dark matter disk on which that short paper was based.
We are very rapidly undoing the cosmic work of millions or even billions of years.”The author suggests that a disk of dark matter might have been the trigger dislodging a comet from its orbit – probably in the Oort Cloud, and send it veering toward the Earth.