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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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Our stellar neighbourhood expands

Astronomers have found a planet in orbit of Barnard's star. Barnard's star is a so-called red dwarf and after the Alpha-Centauri triple stellar system the second closest star to the Sun.

Nov 15th, 2018

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Spacetime - a creation of well-known actors?

Most physicists believe that the structure of spacetime is formed in an unknown way in the vicinity of the Planck scale, i.e. at distances close to one trillionth of a trillionth of a metre. However, careful considerations undermine the unambiguity of this prediction.

Nov 8th, 2018

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Weighing planets and asteroids

A team of scientists from the International Pulsar Timing Array consortium has used pulsar timing data to measure the masses of the dwarf-planet Ceres and other asteroids.

Oct 23rd, 2018

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