Rocky worlds larger than Earth are commonplace in the galaxy, and a few of them may even be habitable. Which poses an interesting question: How difficult would it be for aliens living on these ...

The inward migration of huge alien worlds may be slowed by the presence of "planet traps" in the disks of dust and gas around their stars, a new study reports. These traps could explain the presence ...

The U.S. Government can do everything it wants to try and convince us all that it doesn't know anything about alien life in space, but we'll always assume it's hiding something. Now, a Pentagon ...