One question has preoccupied humankind for thousands of years: Do infinities exist? More than 2,300 years ago Aristotle distinguished between two types of infinity: potential and actual. The former ...

If you didn't catch the " blood moon " Sept. 7-8 from your backyard in the United States, there's a perfectly good explanation — it wasn't visible in North America. The moon took on a striking red ...

Imagine a scenario where the Moon, our constant companion in the night sky, begins a deadly trajectory toward Earth. The consequences would be catastrophic, reshaping every aspect of life on our ...