Dark matter, one of the Universe’s greatest mysteries, may have been born blazing hot instead of cold and sluggish as scientists long believed. New research shows that dark matter particles could have ...

Conventional wisdom holds that in the early universe, pools of dark matter—specifically, “cold” dark matter, a type of dark matter composed of sluggish, slow-moving particles—attracted gas that gave ...

"Now there is an intriguing possibility that dark matter may be more complex and vibrant than we expected." When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...