LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...

Steve Burns, the original host of famed children’s show “Blues Clues” who in recent years has built a significant following on social media, is launching a new podcast. The podcast, called “Alive,” is ...

Planet Y is the latest in a series of hypothetical solar system planets that scientists have proposed in recent years, all with slightly different characteristics but collectively believed to be ...