A new book and documentary from James Bluemel tells the story of the space race so far in photographs, a mix of images from ...

When most people imagine traveling to space, they picture breathtaking, colorful swirls or sparkly stars like the images ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...