From a telescope network that spans much of the globe to a psychology study that spans 67 countries, here are the biggest science experiments on the planet.

From a telescope network that spans much of the globe to a psychology study that spans 67 countries, here are the biggest science experiments on the planet.

Two of the largest machines ever conceived by scientists are being reported by one of the world's leading experts on particle colliders, the massive and expensive machines used to explore inner ...

Some of the largest telescopes are serving as Earth's eyes to explore supernovas, galaxies and other distant objects. Here are the ten biggest telescopes in action and in progress today.

The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and archaeological objects in New York on Wednesday.

The largest piece of Mars ever found on Earth was sold for over $5 million at an auction of rare geological and archaeological objects in New York.

The “Largest Piece of Mars on Earth” just sold at auction for about $5.3 million— $5,296,000, to be exact. Popular Science has reached out to Sotheby’s for confirmation of the sale price.