Flat model
The nebular model explains
A model describing the Universe as static and not changing. According to this model the Universe always existed and always will, and it was in the past the same way we see it today.
Earth was the center of the universe
The geocentric modelof the universe stated that the earth was at the centre of the universe.
The stars in the Ptolemaic model of the universe move on or are attached to a celestial sphere.
What is known as the Big Bang Theory is the currently recognized model of how the universe began.
a model.
The generally accepted model is called the "Big Bang". It means that all the matter and energy of the Universe was in a tiny space, some 13.8 billion years ago or so, at a tremendously high temperature and density. From there, it started to expand; currently, the Universe continues expanding, and will probably continue to expand forever.
The nebular model explains
The invention of the telescope showed that the earth wasn't the center of the universe.
They developed the currently accepted model of the plasma membrane of a cell in 1972 at the University of California, San Diego. Their model is called the Fluid-Mosaic Model.
No. A law is a description of an observed pattern in the universe. A theory is a model that explains observations. E.g. atomic theory explains many of the things that matter does. There will not be a time in the future when we will call it "atomic law" because the model of atoms is concerned with explaining the behavior of matter, not describing it.
The "geocentric theory" refers to the discarded notion that the Earth is at the center of the universe. The Big Bang theory is the model that explains how the universe is basically homogeneous in all directions, and that there is no topological center or preferred place of observation in the universe.
the pulsating universe theory is when the universe expands (the big bang) then contracts (the big crunch) and so on (it's pulsating). according to this theory right now the universe is expanding, but then it will contract
Copernicus suggested a heliocentric model of the universe. Meaning, the earth was the centre of the universe and other planets had to orbit around the earth. This model of the universe was against Ptolemy's model of a geocentric model; a stationary Earth at the centre of the universe.
In physical cosmology, astronomy and celestial mechanics, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Dark energy is the most accepted theory to explain recent observations and experiments that the universe appears to be expanding at an accelerating rate. In the standard model of cosmology, dark energy currently accounts for 73% of the total mass-energy of the universe.
This model of the universe placed the Earth at the center of the universe