Uploaded July 2012 | Updated September 2026, 4 days ago
Physicist Dr. Alexander Vilenkin explains his theorem (the Borde Guth Vilenkin Theorem or the Kinematic Incompleteness Theorem) in simple terms that if you have a Hubble expansion that has an average greater than zero, then the universe pretty much has a beginning. Also, Vilenkin answers some critics of his theorem.
Physicist Dr. Alexander Vilenkin explains his theorem (the Borde Guth Vilenkin Theorem or the Kinematic Incompleteness Theorem) in simple terms that if you have a Hubble expansion that has an average greater than zero, then the universe pretty much has a beginning. Also, Vilenkin answers some critics of his theorem.
