Getting warmer. Scientists are keen to get to the bottom of the dark matter puzzle because this phenomenon accounts for the vast majority of the "stuff" in the universe — about 85%, in fact.

Related: We still don't know what dark matter is, but here's what it's not Now, a team of researchers says black holes may serve as the perfect test bed for finding this kind of dark matter. They ...

Hypothetical dark matter is believed to exist based on observed gravitational effects that cannot be explained by visible matter. Scientists estimate that 85% of the universe's total mass is dark ...

Adam Riess won the Nobel Prize in Physics in 2011 for making a discovery that rocked the way scientists view the cosmos. By showing that the universe, fueled by a strange force known as dark ...

Hypothetical dark matter is believed to exist based on observed gravitational effects that cannot be explained by visible matter. Scientists estimate that 85% of the universe's total mass is dark ...