The universe is 20 billion years old, and it is expanding as a result of the Big Bang. The rotating, spiral galaxies were caused by the Big Bang.
The Facts Are .....
The age of the universe under evolutionary theory is not set. Over the seven years to 1987, the various dates for the universe have been 15 billion, 12 billion, 19 billion, 8 billion, 20 billion, and finally 11 billion.  
The work of Barry Setterfield with the decay of the speed of light has shown from his analysis of the red shift in the light from stars, that the age of the universe is approximately 6,000 years old. 
The red shift actually occurs in evenly spaced values or jumps, not in a smooth manner as it would be if the universe was expanding. 
Plasma physicist, Eric Lerner, is on record as saying that the Big Bang theory is not correct. He has stated that the huge conglomeration of galaxies could not have formed in 20 billion years. 
Many world class astronomers are challenging the Big Bang theory of the origins of the universe.
"The problem of explaining the existence of galaxies has proved to be one of the thorniest in cosmology. By all rights, they just shouldn't be there, yet there they sit. It's hard to convey the depths of frustration that this simple fact induced among scientists." 
The evolutionary time-scale for the 'breakup' or dissipation of cluster galaxies is 2-4 million years, as there are too many cluster galaxies. This means that the universe cannot be 20 billion years old. In fact, exhaustive searches of the universe has failed to find any field galaxies - the independent galaxies that cluster galaxies disperse into. 
The observed speed of rotating galaxies is so fast that they cannot be more than a few hundred million years old. This is called the 'Winding-up Dilemma' and evolutionists have tried to explain it with the theory of 'density waves'. This wave theory has conceptual problems, and is a hypothesis which has not been confirmed by observation. 
"We know of no process that can maintain a spiral arm [of a galaxy] for more than two galactic revolutions". 
"If this theory is true, the universe is young, since it has so many rapidly revolving spirals." 
The age of the universe, recently calculated from the Hubble Space Telescope's data, is 8-12
- The West Australian, July 7, 1987; New Scientist, February 9, 1984;
- NCSE Reports, Vol. 11, No. 4, 1991 p:17
- Paul D. Ackerman, "It's a Young World After All", Baker Book House: Grand Rapids (Michigan), 1993 p: 73-76
- Scientific American, December, 1992 p:19-20
- Manilla Bulletin, June 5, 1991 p:7; Eric Lerner, "The Big Bang Never Happened", Times Books: New York, 1992 p:295
- Nature, Vol. 349, No. 6304, January 3, 1991; Science News, November 25, 1989 p:340;
- Science, Vol. 263, March 25, 1994 p:1684
- Written by evolutionist James Trefil in "The Dark Side of the Universe", Charles Scribner's Sons: New York, 1988 p:55
- Paul D. Ackerman, "It's a Young World After All", Baker Book House: Grand Rapids (Michigan), 1993 p:68-70
- H. Scheffler & H. Elsasser, "Physics of the Galaxy and Interstellar Matter", Springer Verlag: Berlin, 1987 p:352-353 & 401-413
- Written by Hadley Wood in his book "Unveiling the Universe", American Elsevier Publishing Co: New York, 1968 p:188
- Written by C.B. Clason as a logical conclusion to the mechanical fact that galactic spiral arms cannot be maintained for more than 2 revolutions. Expressed in his book "Exploring the Distant Stars", G.P. Putnam's Sons: New York, 1958 p:326
- Nature, Vol. 371, 1994 p:741-742;
- Science News, Vol. 146, 1994 p:232-234
- Science, Vol. 267, 1995 p:980-983;
- Nature, Vol. 372, 1994 p:304.