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

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

Some scientific breakthroughs may be lost to time due to scandal and redaction, while others are simply a case of waiting for ...

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