“The familiar three dimensions of space—height, width and
length—may have been just one or two when the universe was formed, some physicists say.
to the report, their proposal holds that the familiar three
dimensions of space could have been folded into two or just one at
extremely high energies and temperatures.
Such conditions characterized the universe just after the
“Big Bang” that gave it birth. As the universe cooled, in this view,
more spatial dimensions would have appeared one by one. “