add dark galaxies — collections of stars so sparse and faint that they are all but invisible. An artist’s depiction of hydrogen gas observed in the galaxy J0613+52, with the colors indicating ...

It shows a rotational structure but no visible stars. This characteristic aligns with the hypothesis of a dark galaxy, primarily composed of dark matter. Measurements indicate that unexplained ...

Astronomers experienced that unusual horror when they recently observed the distant galaxy NGC 1277 and found it entirely devoid of dark matter. The stuff has, apparently, vanished into the ...

This dark matter detection method would hinge on two of these vast groupings of galaxies meeting and smashing into each other. As these galaxy clusters are packed with dark matter, astronomers ...

A galaxy floating alongside our own some 380,000 light-years from Earth could offer fresh clues in the 90-year-long quest to determine the nature of dark matter, the invisible glue that holds ...

The new observations are the first to directly probe the decoupling of the dark and normal matter velocities. Galaxy clusters are among the largest structures in the universe, glued together by ...

Though galaxies are mostly made of dark matter, understanding how it is distributed within a galaxy offers clues to what this substance is, and how it's relevant to a galaxy's evolution.

Day 9 of the 2024 Space Telescope Advent Calendar: a dark and dusty galaxy. This Hubble view of NGC 1546, a spiral galaxy about 50 million light-years away, provides good view of dust lanes from ...

It shows a rotational structure but no visible stars. This characteristic aligns with the hypothesis of a dark galaxy, primarily composed of dark matter. Measurements indicate that unexplained matter ...