A photon was apparently detected in two places at once in a twist on the classic double-slit experiment, but many physicists ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

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

The answer is as obvious as it seems – the Earth looks flat when you're standing on it, not cone-shaped. Visual evidence ...

It emerged from decades of sightings, decades of unanswered questions, and an accumulation of credible reports from military ...