The Forum > General Discussion > Does Time Exist?
Does Time Exist?
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The light in the photo, at the following link, left its source 13 billion years ago, when the universe was only about 380,000 years old. Goggle COBE universe if you what some background.
http://lambda.gsfc.nasa.gov/product/cobe/more_images/cobeslide28.jpg
It is suggested that time has a begiining and its smallest unit is Planck Time (10 to the minus 43rd power of second, I think). Space and time are bundled (4-D) and in very, ver, very beginning the first unit of time may not have been definitive.
As noted above, the arrow of time seems to be forward for psychological time and for the second law of thermodynamics. "If" there is a Big Crash after the Big Bang runs out steam, would time run backwards? No. The contraction would commence with a higher (more run down) state of entropy.
The behaviour/realisations of something falling into a Black Hole depends on one's relationship with how one experiences/observes the BH.
Offline for a few days.