Around 565 million years ago, just when life was getting seriously underway: The finding, reported online January 28 in Nature Geoscience, supports an idea previously proposed by simulations that Earth’s inner core is relatively young. It also provides insight into how, and how quickly, Earth has been losing heat since its formation 4.54 billion years ago […]
From ScienceDaily: Earth most likely received the bulk of its carbon, nitrogen and other life-essential volatile elements from the planetary collision that created the moon more than 4.4 billion years ago, according to a new study by Rice University petrologists in the journal Science Advances. “From the study of primitive meteorites, scientists have long known […]
All’s well that ends well, this time. But calling off the pack might be an idea too.
Actually, the intuition that They Are Out There is not based on science; it is based on deductive reasoning.
We know far more about that now than we did then.
Two independent teams of astronomers recently looked into the matter: Astronomers have detected and measured the mass and/or orbital features of 3,869 planets in 2,887 planetary systems beyond the solar system. This ranks as a staggering rate of discovery, given that the first confirmed detection of a planet orbiting another hydrogen-fusion-burning star was as recent […]
Is it only selective attention that causes us to see order in the universe? There is another, more interesting, explanation for the structure of the laws of nature. Rather than saying that the universe is very structured, say that the universe is mostly chaotic and for the most part lacks structure. The reason why we […]
We are told that Earth and Mars are like two siblings who have grown apart: “There was a time when their resemblance was uncanny: Both were warm, wet and shrouded in thick atmospheres. But 3 or 4 billion years ago, these two worlds took different paths”: Long ago, Mars stopped changing, while Earth continued to […]
Get a load of this: More recently, scientists have pointed out that if one tweaks many of the dimensionless physical constants — numbers like pi that are independent of units and simply exist as fundamental ideas — none of the cosmos we see would exist. One of these numbers is omega, the density parameter, which […]
Michael Denton, author of Children of Light: The astonishing properties of sunlight that made us possible, explains, We should feel very lucky. The sun is a giant fusion bomb, converting hydrogen to helium in an ongoing chain reaction in its dense, ultra-hot core. But fortunately for us, the electromagnetic radiation emitted by this runaway fusion […]
Physicist S. Fred Singer offers some suggestions pertaining to the hunt for life on Mars: 1. Super-rotation of the core Seismic data, taken over a period of several years (Zhang, et al., Science 2005), suggest that the (innermost, solid iron) core is rotating slightly faster than the rest of the Earth, at 0.3-0.5 degrees/yr. We […]
An “expert voice” astrophysicist explains that the Big Bang is now the “vanilla Big Bang,” which is unpopular because it doesn’t explain all observations: The Big Bang model is our most successful explanation for the history of the universe that we live in, and it’s ridiculously easy to encapsulate its core framework in a single, […]
Michael Denton has a new book out, Children of Light: The astonishing properties of sunlight that made us possible, on the fitness of sunlight for life: In this book, I have described the fitness of the radiation emitted by the Sun for life on Earth: the fitness of the atmosphere to ensure sufficient IR radiation […]
Because the best theories have not identified dark matter after decades: Having been fooled once, scientists have to ask: Is dark matter the new ether? For decades, a few rogue scientists have stood hopefully at the edge of respectability, offering their theory called Modified Newtonian Dynamics, or MOND. Essentially, it says that physics doesn’t work […]
A science writer explains, Our early Sun’s rate of rotation may be one reason we’re here to talk about it, astrobiologists now say. The key likely lies in the fact that between the first hundred million to the first billion years of its life, our G-dwarf star likely had a ‘Goldilocks’ rotation rate; neither too […]