A closed Universe.
The Big Bang theory
The theory that describes the origin of the universe as an explosion of all matter and energy is known as the Big Bang Theory. According to this theory, the universe began as a singularity and has been expanding ever since, roughly 13.8 billion years ago. This expansion continues today, leading to the vast and dynamic universe we observe.
the big bang theory is a cosmological model wich states that how was universe created and why it 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.
An accelerating universe is a theory which describes and seeks to explain the increasing rate of the expansion of the universe.
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.
The expanding universe model
The Big Bang theory
Latest theory is that the universe is expanding.
The theory that describes the origin of the universe as an explosion of all matter and energy is known as the Big Bang Theory. According to this theory, the universe began as a singularity and has been expanding ever since, roughly 13.8 billion years ago. This expansion continues today, leading to the vast and dynamic universe we observe.
Big Bang Theory
In essence the big bang theory
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 big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
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.
The big bang theory is the explosion that started the universe. Where as the big crunch is the theory where the universe will eventually contract and become increasingly clumped and eventaully all mater would collapse into black holes which would then coalesce producing a unified black hole or Big Crunch singularity.
No one knows for sure. There are theories, but absolutely none of them can be proved, and I doubt we will ever find out. The universe is expanding firther into what was here before the big bang. Basically, nothing. The universe isn't expanding like a balloon blowing up; the universe is already there, but the objects inside it are spreading out constantly (black holes, stars, galaxies, etc.) The universe isn't expanding; the objects inside are spreading out within it.