In a landmark discovery, astronomers have confirmed the existence of a solitary stellar-mass black hole—an object with immense gravity, yet no visible companion, quietly roaming the depths of the ...

They have refined the estimate of the black hole mass, ruling out the possibility of it being a neutron star. It is thought ...

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

Webb witnessed a highly ionised gas whose level of energy was too high to come from something like supernovae, making ...

If dark matter is creating positrons in the CMZ, those particles will eventually slow down and eventually annihilate with electrons in the environment, producing gamma-rays at exactly 511keV energy.

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

A massive black hole at the heart of a galaxy in the Virgo constellation is waking up, shooting out intense X-ray flares at ...

The James Webb Space Telescope (JWST) has teamed up with the MeerKAT radio telescope array to explore how magnetic fields ...

Back when the Universe was new, following the Big Bang some 13.8 billion years ago, galaxies took a bit of time to assemble ...

ALMA has revealed evidence of a new type of slim, filamentary structure that drives cycles of depletion and replenishment. At ...

A team of astronomers at the Space Telescope Science Institute, working with one colleague from the University of St Andrews' Center for Exoplanet Science and another from the European Southern ...

This paper reports the discovery of a high-velocity star J07 ejected from globular cluster M15 approximately 21 million years ...