"I who am a specialist in the field am moved to ask myself, 'Did this physician [Immanuel Velikovsky] writing in 1954 know more about physics of radio emissions than this physicist [Carl Sagan] writing 20 years later?'" -- James Warwick, astronomer, 1974
"Dr. Velikovsky pointed out that the collisions were not independent; in fact, if two bodies orbiting the Sun under the influence of gravity collide once, that encounter enhances the chance of another, a well known fact in celestial mechanics. Professor Sagan's calculations, in effect, ignore the law of gravity. Here, Dr. Velikovsky was the better astronomer." -- Robert Jastrow, astrophysicist, December 1979
"This Sagan assumption is so disingenuous that I do not hesitate to label it as either a deliberate fraud on the public or else a manifestation of unbelievable incompetence or hastiness combined with desperation and wretchedly poor judgement." -- Robert W. Bass, astronomer, 1976
Joshua Snyder: The Science Cartel vs. Immanuel Velikovsky. (Via Louis Hissink's Crazy World)
In 1950, Immanuel Velikovsky culminated decades of research with a book titled Worlds in Collision that "proposes that many myths and traditions of ancient peoples and cultures are based on actual events." His approach was interdisciplinary, a rarity in the 20th century, taking into account astronomy, physics, chemistry, psychology, ancient history, and comparative mythology.
He noted, for example, that Venus, the second brightest object in the night sky, was not mentioned by the earliest astronomers. He proposed that the planet was a newcomer to our solar system, a comet, appearing in historical times with an irregular orbit that caused catastrophic events on our own planet.
Coming in close contact with the Earth, the latter's rotation altered, making it appear that The Sun had stood still, a phenomenon reported on in the Book of Joshua. What has come to be known as Joshua's Long Day is corroborated by the texts of the ancient Chinese, Japanese, Egyptians, Babylonians, and Mayans; the East Asians reporting a extremely long sunset, the Mexicans reporting an extremely long sunrise.
Immanuel Velikovsky was too eminent a scholar to be dismissed outright as a kook, and he counted some respected people among his friends. (See The Einstein-Velikovsky Correspondence). Nevertheless, his Catastrophism was rejected outright by a scientific establishment that couldn't stomach an interdisciplinary challenge to its dogmatic Uniformitarianism, even after Velikovsky's predictions about the temperature of Venus and radio activity from Jupiter were proven true.