California is a great place for spelunking -- aka exploring caves. While you might think one cave is like another, each one is unique and these are the best.

It is unclear whether a [3I/ATLAS] would transmit radio signals … such signals would take tens of thousands of years to cross ...

Watch as I transform a piece of alien wood into a stunning, glossy bowl! Using deep pour epoxy resin mixed with green alcohol ink, I create a slime-like effect that brings this driftwood to life. Then ...

Readers Edition. This is the (nearly) annual tradition of you, RPS readers, telling us where we went wrong in our annual ...

If aliens are out there, why haven’t we heard from them? That’s the question at the center of Pop Mech’s new story, “Aliens Probably Exist—But They’re Staying Silent For a Reason, NASA Scientist ...

Something very significant has been happening in plain sight, and almost no one seems to be noticing. Over the past few years, there have been televised congressional hearings, repeated news segments ...

Is there an Outer SpaceX? With 3I/ATLAS set to fly by Earth in just over a week, experts continue to speculate over its origins. Harvard Scientist Avi Loeb believes that if aliens, the comet wouldn’t ...

It’s that time of the year when PBS News Hour invites two of our regular literary critics, Ann Patchett and Maureen Corrigan, to highlight their favorite books of the year. Jeffrey Brown picks up the ...

2,397 golden retrievers, and their owners, converged on a park in Buenos Aires, Argentina, on Monday morning to set a new Guinness world record. Our next story has big golden retriever energy, and by ...