Cosmology topics
The best-supported theory of our universe's origin centers on an event known as the big bang.
This theory was born of the observation that other galaxies are moving away from our own at great speed in all directions, as if they had all been propelled by an ancient explosive force..
How early can we see the universe?
Astronomers have calculated that the universe is 13.8 billion years old.
The Hubble Space Telescope has seen back to about 500 million years after the big bang, revealing galaxies with much less defined and more compact structures, very different than those close to us in space and time..
What is early cosmos?
The Early Years
Until roughly 380,000 years after the Big Bang, the entire universe was a thick opaque cloud of plasma of electrons and nuclei.
As the universe expanded, it cooled off enough to let the plasma become atoms, and the cosmos became transparent..
What is the earliest known cosmology?
The earliest physical evidence of astronomical and cosmological thinking is a lunar calendar found on a bone fragment in Sub-Saharan Africa dated at about 20,000 BC..
What is the earliest theory of universe?
The best-supported theory of our universe's origin centers on an event known as the big bang.
This theory was born of the observation that other galaxies are moving away from our own at great speed in all directions, as if they had all been propelled by an ancient explosive force..
What is the early universe?
Until around a few hundred million years or so after the Big Bang, the universe was a very dark place.
There were no stars, and there were no galaxies.
After the Big Bang, the universe was like a hot soup of particles (i.e. protons, neutrons, and electrons)..
What is the oldest cosmology?
Cosmology is as old as humankind.
Once primitive socal groups developed language, it was a short step to making their first attempts to understand the world around them.
Very early cosmology, from Neolithic times of 20,000 to 100,000 years ago, was extremely local..
What is the origin of cosmology?
The origins of today's cosmology began with the observation in the early 1500s by Nicolaus Copernicus that the Earth revolves around the Sun.
The next step was the discovery in the late 1600s by Isaac Newton that objects in space behaved according to the same laws of physics as objects on Earth..
- Planck.
In 2015, the Planck Collaboration estimated the age of the universe to be 13.813\xb10.038 billion years, slightly higher but within the uncertainties of the earlier number derived from the WMAP data.
In the table below, figures are within 68% confidence limits for the base ΛCDM model. - The early Universe refers to the onset and first couple of billion years of the Universe.
Research topics include but are not limited to the radiation leftover from the Big Bang (cosmic microwave background), the formation of the first stars, and high-redshift galaxies.
