A fascinating galaxy cluster

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 …

A giant ring of black holes

The Space Telescope Science Institute (STScI) in Baltimore, Md. produced a composite image of Arp 147, a pair of interacting galaxies located about 430 million light years from Earth. In this picture, X-rays from the NASA’s Chandra X-ray Observatory are in pink, and optical data from the Hubble Space Telescope …

Neutron star may have a superfluid core

Neutron stars are the densest objects in the Universe, just after black holes. According to recent observations, they may have a superfluid core.
Two separate teams of scientists claim that superfluid matter – frictionless – is the best explanation for the temperature drop observed in the neutron star at the center …

The oldest galaxy cluster

An international team of astronomers discovered the most distant known galaxy cluster. The light coming from the cluster Cosmos-AzTEC3 was emitted when the Universe was approximately a billion years old (it is today 13,7 billion years old).
A theory confirmed
Cosmos-AzTEC3 is a “proto-cluster”, a developing group of galaxies, and it is …

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