Wikipedia entry (German)
Back in the early ’70s, the Italian physicist, Daniele Amati reportedly said that string theory was part of 21st-century physics that fell by chance into the 20th century. I think it was a very wise remark. (Edward Witten, Nova interview 2003, also American Scientist Astronomy Issue 2002)
On examples of universal spacetimes:
Last revised on November 23, 2019 at 18:40:43. See the history of this page for a list of all contributions to it.