Worlds in Collision is becoming quite a popular theme in modelling circles. Gary sent in the links below. At www.dailymail.co.uk/sciencetech/article-4149746/Early-Earth-scarred-mass… … a massive bombardment event occurred 4 billion years ago and this involved disintegrating failed planets smashing into each other and causing debris to fly around the solar system.
At www.dailymail.co.uk/sciencetech/article-4148838/Collision-466m-years-ago… … a study claims a giant mega explosion to tow huge asteroids bombarded our planet with space rocks half a billion years ago. Of course, all this differs from Velikovsky as it is placed in the remote past, a blip on the history of the solar system. The findings, we are told, nevertheless shake up conventional 'belief' – which is a strange word to use. Should that be theory rather than belief? Whatever, it shows the solar system has not been stable which contradicts the idea of gradualism and uniformitarianism (but this will be ignored as the dates are so way back in time).
Meanwhile, at www.astronomy.com/news/2017/01/selenium-helps-find-pervious-life-on-eart… … we are told earth harboured complex life 2 billion years ago. In other words life was thriving half a billion years ago (see above link to earth being showered by space rocks) – so where are the fossils?