Latest Anthropic principle Stories
Scientists have debated the merits of the anthropic principle – the notion that the universe is somehow fine-tuned for life, or vice versa – and its variants for decades. The search to understand the nature and evolution of the universe is what plagues the fields of cosmology and astrophysics.
Alejandro Jenkins writes in Scientific American that life may exist -- in other universes.
Lee Smolin, author of the bestselling science book The Trouble with Physics and a founding member and research physicist at the Perimeter Institute for Theoretical Physics in Waterloo, Canada, writes exclusively in the June issue of Physics World explaining why theories of cosmology that suggest that our universe is just one of many - the so-called multiverse - and thus perpetuate the notion that time does not exist are flawed.
Astronomer Royal, Sir Martin Rees describes how for the first time, humans as a species may start to change in observable ways within single lifetimes and under some loose control of our own influence. If this future plays out, the future itself becomes more difficult to forecast.
Astronomer Royal, Sir Martin Rees discusses the limits to our knowledge of what might have preceded the big bang. Everyone asks the question: what was 'there' the instant before everything came to be?, but the question may not go as deep as the answers it spawns.
In the last few decades, astronomers and cosmologists have been able to understand how our physical universe has evolved over nearly fourteen billion years, from its beginnings to the so-called big bang to its present state with galaxies, stars, and planets.
Cosmological Constant -- The cosmological constant (usually denoted by the Greek capital letter lambda: Î›) is a value occurring in Einstein's theory of general relativity. The units of Î› are 1/second2; its value is unknown but believed to be positive based on recent observations. The constant is proportional to the energy density of the vacuum Ï, where Ï€ is Pi, G is the gravitational constant and c is the speed of light in vacuum. The term can be postive, negative, or...
- The act of burning, scorching, or heating to dryness; the state or being thus heated or dried.
- In medicine, cauterization.