ooval and loonleo
It is very easy to answer- First, I want to tell that , what is a universe? A universe is a limitless space with billion of stars in it. So,lets come to the point.There is no boundary in the universe as it is a very vast space and billion of other universe are also there. I wish that you could understand it
The no boundary universe theory was formulated in 1983.
A description of the universe includes all matter and energy.
the year of the no boundary theory is 1983.
There are no perfect black bodies on the universe. But there are a lot of them which can be approximated (with good precision) by the black body description.
1983
1983
unverse it hasn't definate boundary
the theory produced by Stephen Hawking and John Hartle in 1983 that the universe has no boundaries
Indus River
cosmology
I believe there is only one type of universe, a Quaternion four dimensional Universe. This Quaternion Universe has one real dimension and three vector dimensions. The universe has two "states", the Boundary state and the Internal state. The Boundary state is a minimum size, around r=150E24 meters. The Internal state is much larger than 150E24.