Gaia detects a shake in the Milky Way

A team led by researchers from the Institute of Cosmos Sciences of the University of Barcelona (ICCUB, UB-IEEC) and the University of Groningen has found, through the analysis of Gaia data, substructures in the Milky Way ...

Black hole disks may be hiding in the centers of galaxies

Galactic nuclei are teeming with black holes. Earlier this year, 12 X-ray binaries were discovered at the Milky Way's center which suggested that thousands of black holes may be hiding in that region. A recent study shows ...

Hubble's majestic spiral in Pegasus

This NASA/ESA Hubble Space Telescope image shows a spiral galaxy known as NGC 7331. First spotted by the prolific galaxy hunter William Herschel in 1784, NGC 7331 is located about 45 million light-years away in the constellation ...

Astrophysicists explain the mysterious behavior of cosmic rays

A team of scientists from Russia and China has developed a model explaining the nature of high-energy cosmic rays (CRs) in our galaxy. These CRs have energies exceeding those produced by supernova explosions by one or two ...

What are active galactic nuclei?

In the 1970s, astronomers became aware of a compact radio source at the center of the Milky Way Galaxy – which they named Sagittarius A. After many decades of observation and mounting evidence, it was theorized that the ...

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