“Caught in the act”1 reads the news headline for the first-ever observation of a predicted exploding star. The NASA/ESA Hubble Space Telescope captured the image of the first-ever predicted supernova as shown in the image below (bottom right), compared against an image from months earlier (top right). The reappearance of the Refsdal supernova was calculated from different models of the galaxy cluster whose immense gravity is warping the supernova’s light.
First it was dark matter,1 then came dark energy,2 followed by dark fluid,3 dark flow,4 and dark radiation5; and now a new entity is suggested for the dark sector of particle physics—dark photons. The dark sector is full of hypothetical entities designed to save the big bang story but it is really just a lot of cosmic storytelling.6
Previously I have argued that dark matter is a sort of ‘god of the gaps’, the ‘unknown god’,7 in astrophysics. It is an unknown invoked to explain the inexplicable,8 which, if you follow the chain of logic, is required to maintain a belief in the big bang paradigm. Its existence is only inferred from the application of known physics to certain observations in the universe.9 Without assuming the existence of some exotic unknown dark matter comprising about 25% of the matter/energy content of the universe10 the standard big bang model would have to be discarded as a total failure.
Dark matter has never been observed in space or in any laboratory experiment.
Now a new observation of four colliding galaxies in the Abell 3827 cluster apparently may shed new light on the conundrum.11 See the four galaxies in the centre of the figure here.
We might ask, with all the modern technology—including space-borne telescopes like the Hubble Space Telescope and numerous others, and large, earth-based telescopes with adaptive optics and advanced supercomputers for image processing and simulations—hasn’t the evidence now been firmly found to establish the big bang as correct? The following paragraphs (emphases added) from a 2007 article in the prestigious journal Science includes quotes from three well-known cosmologists.1