Tag Archives: Dark Matter

Scientists use the Milky Way to hunt for dark matter

by Chelsea Gohd, Space.com

Scientists studying a mysterious signal from far-off galaxies didn’t find dark matter as they’d hoped. But the inventive new technique they used to detect this strange signal, which uses our own galaxy to hunt for dark matter, could elevate the hunt for the elusive material.

For decades, scientists have been searching for dark matter, an invisible material that doesn’t interact with light but which permeates our entire universe. And a signal coming from a nearby galaxy spotted in a 2014 study gave scientists hope that this was the long-sought evidence for dark matter. 

Continue reading Scientists use the Milky Way to hunt for dark matter

Bizarre slime mold behavior used to map hidden web of dark matter

by Abrar Al-Heeti, c|net

Slime mold may be one of Earth’s “simplest” life forms, but it’s providing a new way to learn about the universe.

Researchers are using the behavior of slime mold, a strange, single-celled organism, to help map the web of dark matter filaments which make up our universe. Scientists designed a computer algorithm inspired by the unique creature to try to trace the cosmic web, which is “the large-scale backbone of the cosmos,” according to a NASA press release. They applied the algorithm to data that had the positions of 37,000 galaxies, which then created a 3D map of the cosmic web’s “intricate filamentary network.”

Continue reading Bizarre slime mold behavior used to map hidden web of dark matter

Cold Dark Matter Is Heated Up By Stars, Even Though It Cannot ‘Feel’ Them

by Ethan Siegel, Forbes

One of the great cosmic mysteries of our time is the presence and existence of dark matter. Unlike normal matter, which is made of known particles that can emit, absorb, or otherwise interact with light and the other known particles, dark matter simply passes through both itself and everything else. It is completely invisible, as far as we can tell, except for one effect: it appears to have a gravitational mass. It affects the curvature of spacetime, and holds galaxies, clusters of galaxies, and the great cosmic web together.

Continue reading Cold Dark Matter Is Heated Up By Stars, Even Though It Cannot ‘Feel’ Them