Get unlimited access to ad-free articles and exclusive content. In part two of this Hidden Planet episode, Inside the Pharoah's Secret Tunnels, Richard Engel journeys into the Great Pyramid of Giza in ...

The closer we get to Ceres, the more perplexing the dwarf planet grows. NASA’s Dawn spacecraft has found several more bright spots as well as a pyramid-like peak jutting out of the frigid world’s ...

If you’re pining for more planet sightings, April is your lucky month. Our interstellar neighbors will bedazzle the night skies throughout the next few weeks, from moon-planet meetups in early April ...

New images taken by Nasa's Dawn spacecraft have captured an odd, pyramid-shaped peak protruding from the flat surface of Ceres. The craft has been observing the dwarf planet, which lies in the distant ...

If you’re pining for more planet sightings, April is your lucky month. After sunset on April 2, the crescent moon and Jupiter appeared in the western sky looking as if they're within a palm’s width of ...

The debate over the true purpose of Egypt's Great Pyramid has been reignited after a study has suggested it was constructed to deliver messages.