A closed Universe.
The Big Bang theory
It doesn't seem so. There is evidence that the expansion is accelerating (the Universe is expanding faster than in the past). The reason for this is still somewhat of a mystery; do an Internet search on "dark energy" for more details.
A "no boundary" universe is a universe where the change in energy is positive or negative everywhere in the universe. Such a universe theory calls for everywhere expansion or everywhere contraction. The current central dogma in Astronomy is for such an expanding universe. The corrected Law of Gravity indicates that the universe is bounded and not expanding.
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
the big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
Yes it will expand but after a few millennium years it is said in theory that it will contract and contract till it is in nothingness.
Pulsating Theory According to this theory, the universe is supposed to be expanding and contracting alternately i.e. pulsating. At present, the universe is expanding. According to pulsating theory, it is possible that at a certain time, the expansion of the universe may be stopped by the gravitational pull and the may contract again. After it has been contracted to a certain size, explosion again occurs and the universe will start expanding. The alternate expansion and contraction of the universe give rise to pulsating universe.
The expanding universe model
The Big Bang theory
Latest theory is that the universe is expanding.
It doesn't seem so. There is evidence that the expansion is accelerating (the Universe is expanding faster than in the past). The reason for this is still somewhat of a mystery; do an Internet search on "dark energy" for more details.
Big Bang Theory
In essence the big bang theory
the big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
A "no boundary" universe is a universe where the change in energy is positive or negative everywhere in the universe. Such a universe theory calls for everywhere expansion or everywhere contraction. The current central dogma in Astronomy is for such an expanding universe. The corrected Law of Gravity indicates that the universe is bounded and not expanding.
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
It's called the "Big Bang Theory." There's evidence that the universe is expanding, which means it all had to start from a single point. What caused this event is up for debate, as well as whether the universe will continue to expand forever, or reach a point and stop, then come back in on itself.