Controversy Erupts In Cosmology!

Two groups of cosmologists, both of which include experts in the field, are hotly debating whether the key Inflationary Scenario that underpins the aging conventional LCDM cosmology is solid science, or the product of ad hoc model-building, or may even be something bordering on untestable pseudo-science.

See: https://www.math.columbia.edu/~woit/wordpress/?p=9289

and: https://blogs.scientificamerican.com/observations/a-cosmic-controversy/

As one physicist (Lev Landau, I believe) wryly put it: “Cosmologists are often wrong but never in doubt.”

Some very interesting fireworks on display.