The Milky Way of Oz

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How about a magnificent view of the night sky over Australia? Here is Ocean Sky, by Alex Cherney:
Because of this special location, you can admire our Milky Way spreading across the sky above the ocean, parallel to the horizon. It took more than a year to compile 31 hours of …

Quantum nature of space challenged by observations

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New observations have shown that the quantum structure of space, if there is any, is at much smaller scales than predicted.
In Einstein’s theory of relativity, space is a smooth, continuous fabric. In quantum theory, there is an inherent discreteness present in physics. In an attempt to reconcile the two theories, …

Spacetime torsion: The end of major cosmological problems?

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A cosmologist has shown that an already existing extension of general relativity may eliminate major problems in gravitational physics, and answer major questions in cosmology.
The Einstein–Cartan–Sciama–Kibble (ECSK) theory of gravity naturally extends general relativity to account for the intrinsic angular momentum (spin) of elementary particles. This theory, named after Albert Einstein, Élie Cartan, Dennis …

A huge flare for a hungry star

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Astronomers have observed an enormous X-ray outburst, probably caused by a star feeding on a giant clump of matter.
Neutron stars, forming after the death of massive stars, are so dense they generate extremely strong gravitational fields. The clump of matter came from a blue supergiant, orbited by a companion neutron …

A fascinating galaxy cluster

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Astronomers have studied one of the most interesting galaxy clusters, Pandora’s cluster. Probably formed by complex and violent collisions, the unusual cluster has many features never seen before.
At least four galaxy clusters had to collide to form Abell 2744, or Pandora’s cluster. Its nickname comes from the multiple strange phenomena …

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