Every action in physics is governed by some kind of push or pull. As far as we know, these all fall into one of just four categories; electromagnetism, gravity, and two kinds of nuclear force. Yet ...

Could a new, fifth force of nature provide some answers to our biggest questions about dark matter and dark energy? We’re working on it. The Standard Model is, for all intents and purposes, the ...

Hints of a new fundamental interaction are starting to look less like statistical ghosts and more like a pattern that refuses to go away. From the strange wobble of subatomic particles to puzzling ...

Scientists have discovered that dark matter, the universe's most mysterious "stuff," obeys gravity on vast cosmological scales. This could help to dismiss the possibility of a fifth fundamental force ...

"If such a fifth force exists, it cannot exceed 7% of the strength of gravity." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists have ...