The Secret Behind Light's Journey Through Space Visible light travels in electromagnetic waves, which we see as the colors of ...

Folklore suggests that a full moon has a strong effect on sleep. But the reality is more complex, and lifestyle habits like ...

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 color ...