April 25th is the date in 1953 when James Watson and Francis Crick published their historic paper in Nature describing the double-helical structure of #DNA. They figured all that out, of course, thanks to Rosalind Franklin's groundbreaking x-ray crystallography work, including the legendary "Photo 51".
Paul Steinhardt of Princeton University has proposed a "Ekpyrotic Model" of the Universe that describes our current universe as arising from a collision of two three-dimensional worlds (branes) in a space with an extra (fourth) spatial dimension. The proposal is interesting in and of itself, but also because it is the precu...See More — with August Depner. Unlike · · Share
In 1953 Watson and Crick published their paper on the structure of DNA, revealing one of the biggest mysteries of living organisms. This is an x-ray diffraction image by Franklin and Gosling, who did the initial research on the DNA structure.