New method cuts through galaxies’ messy emissions, provides clearer window into dark matter, dark energy
In 2018, a team of astronomers from the United States and Canada discovered that an ultra-diffuse galaxy called NGC 1052-DF2 (DF2 for short) contains virtually no dark matter. The galaxy is roughly the size of our Milky Way Galaxy, but hosts only 1/200 the number of stars. It lies in the constellation of Cetus, about 65 million light-years away, and is a member of the NGC 1052 group of galaxies. Now, the team reports the discovery of a second galaxy in this class, residing in the same group.
An international team of researchers has put a theory speculated by the late Stephen Hawking to its most rigorous test to date, and their results have ruled out the possibility that primordial black holes smaller than a tenth of a millimeter make up most of dark matter. Details of their study have been published in this week’s Nature Astronomy.
Humanity’s most far-flung spacecraft, NASA’s 41-year-old Voyager 1, has poked a hole in a long-shot theory of dark matter.
An international team of astrophysicists from the University of Surrey, Carnegie Mellon University and ETH Zürich has found evidence that dark matter can be heated up and moved around, as a result of star formation in galaxies.
Scientists at the University of Oxford may have solved one of the biggest questions in modern physics, with a new paper unifying dark matter and dark energy into a single phenomenon: a fluid which possesses ‘negative mass.”
When NASA’s Europa Clipper spacecraft sails by Jupiter’s icy moon in the early 2020s, it will be carrying a handful of glass tubes breathed into existence by Mike Souza.
The finding bucks earlier research suggesting faraway galaxies lack the invisible stuff
Hypothetical subatomic particles called axions get their chance to shine