All About Cosmic Beginnings and Information
The best-supported theory on the origin of cosmic is the Big Bang theory. We see all-stars and planets they are part of this cosmic. The universe is comprised of mostly hydrogen and helium. 98% of the universe not visible.
Astrophysical view on Cosmic
Accepted astrophysical theories posit. that at one point there was nothing: no stars, planets, or galaxies-not even space itself. The matter that makes up everything that now exists concentrated in a single, extremely dense point known as a singularity. The force of gravity in a singularity is great. The fabric of time curves in on itself.
In an instant space- known as the big bang. The contents of the primordial singularity escaped-and formed the universe. The big bang is catchy shorthand for a complex astrophysical theory, backed up with sophisticated calculations. The term coined in the 1950s by British astronomer Fred Hoyle, a proponent of a theory of the universe as a steady-state. Hoyle used the term derisively. The name stuck it gives a false impression. Stuck gives an impression on universe. Stuck says all the energy of the universe almost 14 billion years ago was an explosion.
Physicists view on Cosmic
physicists see the big bang more as an instantaneous expansion that within a few seconds created nuclear reactions and produced the protons, neutrons, and electrons that form the structure of matter today. Not long after, the nuclear reactions stopped. The universe was roughly one-quarter heli- um, three-quarters hydrogen-a ratio exhibited in the universe’s oldest stars today. The formation of the universe played out over billions of years. Our own Earth, along with our solar system, is product of a stellar explosion almost five billion years ago.
By all scientific accounts, it continues to expand, and the question of an eventual end looms large in current investigations. The universe itself provides some concrete support for the big bang theory in the form of cosmic background radiation, the “afterglow” of the cosmic inflation. In 1965, engineers looking for the source of the static interfering with satellite communications found a consistent signal emanating from every point in the sky at the wavelength predicted for this radiation.
Wilkinson Microwave Anisotropy Probe (WMAP) Satellite view
COSMIC MICROWAVE BACKGROUND RADIATION, as mapped by satellites, validates the big bang theory. Pictures taken by the Cosmic Background Explorer (COBE) showed hot spots . it could be correlated to the gravitational field of the fledgling universe. Wilkinson Microwave Anisotropy Probe (WMAP) brought out even details in 2002. It is show as here. Telltale hot spots show as red flecks in the image. The Planck Mission, launched in 2009, is making the most accurate map to date of background radiation.
we on Earth think of the universe as a vastness containing everything we know of-and much that we cannot even imagine. For millennia, humans have struggled to make sense of what they see all around them. They observed, calculated, and conjectured, trying to articulate an explanation for a puzzle whose pieces are slowly being revealed with each scientific breakthrough.
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