Observations of galaxy rotation curves: Evidence for Dark Matter in Spiral Galaxies Dark matter’s role in explaining rotation curves: The Rotation Curves of Spiral Galaxies QI theorists contend that ...

In classical physics, their energy can make matter move back and forth, but they were not thought to possess mass. However, this view began to change when scientists investigated a very slippery ...

Scientists have calculated the mass range for Dark Matter -- and it's tighter than the science world thought. Scientists have calculated the mass range for Dark Matter -- and it's tighter than the ...

With this giant vat of chemicals, scientists hope to detect the historically undetectable, a mysterious substance that makes up more than 85 percent of all mass in our universe: dark matter. “One of ...

Dark matter makes up a large portion of the universe, but we've never seen it. Here's what we know, what it might be, and why it could change everything. More than 80% of the universe's matter is ...

Dark matter is a hypothetical form of matter that ... Dutch astronomer Jan Oort in 1932 to explain the so-called "missing mass" necessary for things like galaxies to clump together.