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"Everything should be as simple as it is, but not simpler", Albert Einstein
Browsing All Posts published on »October 17th, 2011«
Dark matter mystery deepens
Like all galaxies, our Milky Way is home to a strange substance called dark matter. Dark matter is invisible, betraying its presence only through its gravitational pull. Without dark matter holding them together, our galaxy’s speedy stars would fly off in all directions. The nature of dark matter is a mystery — a mystery that […]
Billion tonne comet may have missed earth by a few hundred kilometres in 1883
October 17, 2011
A re-analysis of historical observations suggest Earth narrowly avoided an extinction event just over a hundred years ago On 12th and 13th August 1883, an astronomer at a small observatory in Zacatecas in Mexico made an extraordinary observation. José Bonilla counted some 450 objects, each surrounded by a kind of mist, passing across the face […]
Anthropic Likelihood for the Cosmological Constant …..
October 17, 2011
…. and the Primordial Density Perturbation Amplitude Sungwook E. Hong, Ewan D. Stewart, Heeseung Zoe Weinberg et al. calculated the anthropic likelihood of the cosmological constant using a model assuming that the number of observers is proportional to the total mass of gravitationally collapsed objects, with mass greater than a certain threshold, at t \rightarrow \infty. […]
October 17, 2011
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