Knocking on Heaven's Door (book)

Knocking on Heaven’s Door: How Physics and Scientific Thinking Illuminate the Universe and the Modern World
Hardcover edition
AuthorLisa Randall
LanguageEnglish
SubjectPhysics, cosmology
GenreNon-fiction
PublishedSeptember 20, 2011
PublisherEcco Press
Publication placeUnited States
Media typePrint, e-book, audiobook
Pages464 pp.
ISBN978-0061723728
Preceded byWarped Passages 
Followed byHiggs Discovery 

Knocking on Heaven’s Door: How Physics and Scientific Thinking Illuminate the Universe and the Modern World is the second non-fiction book by Lisa Randall.[1][2][3][4][5] It was initially published on September 20, 2011, by Ecco Press. The title is explained in the text: "Scientists knock on heaven's door in an attempt to cross the threshold separating the known from the unknown."[6]