A defunct part of a Falcon 9 rocket could slam into the moon at more than 5,000 miles per hour, according to scientists.

The crowd cheered and shouted "This is the youth of the pope!" as Pope Leo arrived for Mass at a central Madrid plaza. It's the first papal visit to Spain…

New recommendations for early treatment for hypertension to prevent strokes, heart attacks and dementia come as an experimental medication is shown to lower blood pressure in hard to treat patients.