Seven years after Einstein formulated general relativity, he also proffered another theory describing his recipe for happiness.

When it comes to scientifically mysterious concepts that begin with the word "dark," dark matter attracts most of the public attention.

The search for extraterrestrials has gone on long before the SETI Institute was founded in 1984.

Here's what you would see if you were to gaze deeper and deeper into empty space until out of nothing, something suddenly appears.

If Earth were to grow, gravity would mean humans couldn't venture into space on rockets, one scientist says.

They can reach 19 feet tall, meaning giraffes tower over the savannah they live in. So do they get struck by lightning more than other, shorter animals?

liens should be common, yet there is no convincing evidence that they exist. So why haven't we found them?

Most complex animals feel pain, but what about insects? Do experiments on fruit fly gladiators constitute torture?

The man who first proposed that the universe is expanding and formulated the theory of the Big Bang is scarcely recognized by Google.

In order to be an astronaut you need a strong stomach, one that won't make you puke if you see a turd floating by or when you need to poop into a bag taped to your rear end.

There's a place on Earth where you can actually hold a piece of the Sun!

At least one physicist contends that the Large Hadron Collider has, in fact, disproved the existence of ghosts.

The popping, sizzling, rustling, and hissing sounds made by fireballs reportedly occur almost instantly to earthly onlookers. Here's why.

Is it possible to make an element zero? Does it already exist?

Renowned physicist Edward Witten recently suggested that consciousness might forever remain a mystery. But his words haven't discouraged other physicists from trying to unravel it.