time

time big bang 1) About how long ago did the big bang take place? According to the standard theory, our universe sprang into existence as "singularity" around 13.7 billion years ago.    2) What is a black hole?  They are thought to exist at the core of "black holes." Black holes are areas of intense gravitational pressure. The pressure is thought to be so intense that finite matter is actually squished into infinite density (a mathematical concept which truly boggles the mind). 3) Does the universe continue to expand ?    It continues to expand and cool to this day and we are inside of it: incredible creatures living on a unique planet, circling a beautiful star clustered together with several hundred billion other stars in a galaxy soaring through the cosmos, all of which is inside of an expanding universe that began as an infinitesimal singularity which appeared out of nowhere for reasons unknown.     4) Was there really a big bang? space didn't exist prior to the Big Bang. Back in the late '60s and early '70s, when men first walked upon the moon, "three British astrophysicists, Steven Hawking, George Ellis, and Roger Penrose turned their attention to the Theory of Relativity and its implications regarding our notions of time.      5) What light elements seem to support the Big Bang Theory?     (the "Big Bang"), expanded and cooled, going from very, very small and very, very hot, to the size and temperature of our current universe.