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Our Universe: An expanding bubble in an extra dimension

Scientists have devised a new model for the Universe - one that may solve the enigma of dark energy. They propose a new structural concept, including dark energy, for a universe that rides on an expanding bubble in an additional dimension.

Dec 29th, 2018

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A brief history of black holes

Only since 2015 have we been able to observe these invisible astronomical bodies, which can be detected only by their gravitational attraction. The history of our hunt for these enigmatic objects traces back to the 18th century, but the crucial phase took place in a suitably dark period of human history - World War II.

Dec 28th, 2018

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Stellar corpse reveals clues to missing stardust

The origin of stardust, which makes up most of the matter in our solar system, including us, is more complicated than previously thought, according to new observations of a mysterious object 15,000 light-years from Earth.

Dec 21st, 2018

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Beyond the black hole singularity

Loop quantum gravity is opening up a new paradigm in modern physics. The theory has emerged as a leading candidate to analyze extreme cosmological and astrophysical phenomena in parts of the universe, like black holes, where the equations of general relativity cease to be useful.

Dec 20th, 2018

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Sapphires and rubies in the sky

Astrophysicists have discovered a new, exotic class of planets outside our solar system. These super-Earths were formed at high temperatures close to their host star and contain high quantities of calcium, aluminum and their oxides - including sapphire and ruby.

Dec 19th, 2018

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Black hole 'donuts' are actually 'fountains'

Based on computer simulations and new observations, researchers have found that the rings of gas surrounding active supermassive black holes are not simple donut shapes. Instead, gas expelled from the center interacts with infalling gas to create a dynamic circulation pattern, similar to a water fountain in a city park.

Nov 30th, 2018

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