I thought they've scrapped the Big Bang theory since it has been proved the universe is expanding at a faster rate. Meaning there is a force creating the expansion rather than slowing down from a Big Bang
No they didn't. That there was a Big Bang is fairly easy to verify from background radiation.
What scientists found out recently is that the expansion of the universe is accelerating, which is rather curious (considering the four forces we know of: the strong force, which holds the nucleus of an atom together; the weak force, which causes atomic decay; electromagnetic force, which holds electrons in orbit in an atom; and gravity) but not impossible (if there is another force we don't yet know of).
Scientists are currently working on finding out what that fifth force might be. Some started calling it "dark force".
And a recent discovery:
chron.com
Oct. 10, 2003, 11:42PM
Start of universe's expansion discovered
New York Times
CLEVELAND -- Astronomers said Friday that they had determined the time in cosmic history when a mysterious force, "dark energy," began to wrench the universe apart.
Some 5 billion years ago, said Dr. Adam Riess, an astronomer at the Space Telescope Science Institute in Baltimore, the universe experienced a "cosmic jerk."
Before then, he said, the combined gravity of the galaxies and everything else in the cosmos was resisting the cosmic expansion, slowing it down. Ever since the jerk, though, the universe has been speeding up. |
