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What Came Before the Big Bang?

31/10/2013 19:18
Cosmologist Alexander Vilenkin has convincing evidence that we are surrounded by expanding, bubble-like universes. It is cosmology’s most fundamental question: How did the universe begin? The question presupposes that the universe had an actual starting point, but one might just as well assume the...

Darwin's Theory of Evolution - The Premise

31/10/2013 19:15
Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic...

Biosphere

31/10/2013 19:10
Author: Erle Ellis The biosphere is the biological component of earth systems, which also include the lithosphere, hydrosphere, atmosphere and other "spheres" (e.g. cryosphere, anthrosphere, etc.). The biosphere includes all living organisms on earth, together with the dead organic matter...

Origin Of Life: The Panspermia Theory

31/10/2013 19:04
by Sonali S. Joshi How life originated on earth is a question that people have pondered for ages. Theories abound, from those based on religious doctrine, to the purely scientific, to others that border on science fiction. One possibility that hovers on this border is the panspermia theory, which...

Life’s Beginnings

31/10/2013 19:01
by Courtney Humphries September-October 2013 Are the inhabitants of Earth the only life forms in the universe, or could life exist elsewhere? As astronomers rapidly identify exoplanets—those beyond our solar system—the question has been transformed from a science-fiction trope to one discussed in...

Quantum Theory

31/10/2013 18:58
One of the outstanding problems in the late 1800s was to come up with a model describing properties of the basic constituent of matter - the atom. By bombarding thin metal foils with small particles, Rutherford found an interesting property of materials: since most of the particles went through the...

Large-scale structure of the cosmos

31/10/2013 18:53
In Big Bang cosmology, the observable universe consists of the galaxies and other matter that we can in principle observe from Earth in the present day, because light (or other signals) from those objects has had time to reach us since the beginning of the cosmological expansion. [Read more]...

The Inflation Universe

31/10/2013 18:45
by Alan Guth Inflationary theory itself is a twist on the conventional Big Bang theory. The shortcoming that inflation is intended to fill in is the basic fact that although the Big Bang theory is called the Big Bang theory it is, in fact, not really a theory of a bang at all; it never was....

Big Bang Theory - The Premise

31/10/2013 18:42
The Big Bang theory is an effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was...

Science Is Not Your Enemy

31/10/2013 17:47
BY STEVEN PINKER The great thinkers of the Age of Reason and the Enlightenment were scientists. Not only did many of them contribute to mathematics, physics, and physiology, but all of them were avid theorists in the sciences of human nature. They were cognitive neuroscientists, who tried to...
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