At http://phys.org/print362309577.html … we learn about a rethink on black holes. It seems they want to ditch Einstein's gravitational waves, part of his general theory of relativity. It seems that a fruitless 11 year search for gravitational waves via high precision telescopes has led to this conclusion.
However, what were they actually looking for? They expected to detect a background rumble of the waves – but it was nothing but quiet on the cosmic front. This may have something to do with the consensus idea that galaxies grow by merging – and every galaxy has a black hole as a bulls eye. Hence, two black holes are thought to become one black hole, in the larger galaxy. When the two black holes begin to orbit together gravitational waves are supposed to send ripples through space time. Sounds like they are using theory to knock down Einstein. May be Einstein isn't wrong but the concept of black holes is awry.
At http://phys.org/print362306421.html … a newly discovered galaxy came with a supermassive black hole (how else would they know the galaxy was out there). The black hole does not conform to theory – it is too big, suggesting it has grown faster than expected. However, if a black hole is really just a galaxy sized equivalent of a CME (and not a hole) there is little to be mysterious.
Staying on the whacky side at http://phys.org/print362333431.html … dark matter is a like a stealth bomber – it has ways and means of disguising itself. Dark matter has been modelled – and they say although it is elusive in the universe now it would have been visible during the high temperature plasma conditions following Big Bang. They go on to say that dark matter makes up to 83 per cent of the universe and does not interact with electromagnetic energy or with strong or weak nuclear forces. Light does not even bounce off dark matter and ordinary matter behaves as if it does not exist – which they say means ordinary matter passes through dark matter. They add, it interacts with gravity to produce striking effects on the movement of galaxies and galactic clusters. leaving little doubt of its existence. We may note that dark matter exists in the models – appearing by magic out of emptiness.