scientists say that at 0.03 second the inflation reached four light-years, also said that if it had continued at the same rate, it would have been disappeared during the second have of the first second. Inflation theory brings together ideas from quantum physics and particle physics to explore the early moments of the universe, following the big bang.
Anyhow, at present the universe is growing far, far more slowly than during inflation. At this point the universe was smaller than an atom. Inflation for Beginners. It was developed around 1980 to explain several puzzles with the standard Big Bang theory, in which the universe expands relatively gradually throughout its history. Over an incredibly short period of time the universe expanded at an enormous rate. Inflation ended at about $10^{-32}$ seconds after the big bang - that is when the universe was only 0.88mm. INFLATION has become a cosmological buzzword in the 1990s. [+] Universe is dominated by matter, radiation, or the energy inherent to space itself, with the latter corresponding to cosmic inflation. The current rate of expansion is described by Hubble's constant. According to inflation theory, the universe was created in an unstable energy state, which forced a rapid expansion of the universe in … So we don't know how fast the Universe expanded.

How Fast is the Universe Expanding? On the other hand, dark energy drives the universe towards increasing rates of expansion. Inflation causes space to … When we talk about universe inflation we should have in mind that the four cosmic forces did not appear yet, because at inflation no elements were formed yet. The Inflation Theory proposes a period of extremely rapid (exponential) expansion of the universe during its first few moments. That doesn’t sound like much of an expansion, but it’s an increase of 10^26 times in a time so short that we humans cannot possibly wrap our heads around it. The expansion velocity was certainly faster than light for some pairs of positions for some time (otherwise we wouldn't have an event horizon, and the event horizon is well-observed).

Inflation ended when the universe was 10^-32 seconds old and was still less than a millimeter in size. The mechanism that inflation provides that drives the universe towards flatness will in almost all cases overshoot, not giving us a universe that is just nearly flat today, but a universe that's almost exactly flat today. The expansion or contraction of the universe depends on its content and past history. The Universe is certainly bigger than that, probably much bigger (the theory of Early Inflation says it's about 10^20 times bigger), perhaps infinite. No self-respecting theory of the Universe is complete without a reference to inflation -- and at the same time there is now a bewildering variety of different versions of inflation to choose from. With enough matter, the expansion will slow or even become a contraction. This can be avoided, and people have at times tried to design versions of inflation that avoided it, but these versions of inflation never looked very plausible. What’s special about inflation is that the universe is accelerating. JOHN GRIBBIN. The current rate of expansion is usually expressed as the Hubble Constant (in units of kilometers per …
The 400000 years age is when the universe had expanded and cooled enough to become transparent - that is when the CMB photons started traveling towards us 13.7 billion years ago. The universe is currently taking about $10^{18}$ seconds to double it's size so the expansion is about $10^{53}$ times slower. That is the idea that at some very early stage of its development (a fraction of a second after the Big Bang), the Universe expanded extremely fast. Inflation is the mysterious force that blew up the scale of the infant universe from sub-microscopic to gargantuan in a fraction of a second. During inflation (as well as today, since dark energy has taken over), the scale factor, which characterizes the relative distance between comoving points in space, is increasing faster and faster, rather than increasing but at a gradually diminishing rate.


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