In 1977, two spacecraft, Voyager 1 and Voyager 2, launched toward the unknown. Nearly fifty years later, they remain alive at the edge of interstellar space, still whispering faint signals back to ...

The UK Space Agency and the National Nuclear Laboratory are to collaborate on the world's first space battery powered by americium-241. The isotope will be extracted from used nuclear fuel stored at ...

Made under a cloak of wartime secrecy, yet announced in the most public of ways — a radioactive element that governments insist we take into our homes. Ben Still explains how element 95 is one of real ...