Hubble detects smallest known dark matter clumps

When searching for dark matter, astronomers must go on a sort of "ghost hunt." That's because dark matter is an invisible substance that cannot be seen directly. Yet it makes up the bulk of the universe's mass and forms the ...

Taking the temperature of dark matter

Warm, cold, just right? Physicists at the University of California, Davis are taking the temperature of dark matter, the mysterious substance that makes up about a quarter of our universe.

Putting the universe under the telescope

We humans are a curious, questing lot, and the 2020s will see us continue to observe the universe around us, trying to understand more about fundamental particles, forces, objects and relationships from both ground and space-based ...