In a lunar eclipse, the Earth's shadow — called the umbra — blocks the sun's light from hitting the full moon, resulting in a ...
For the first time in nearly three years, a total lunar eclipse was visible across the United States late Thursday night.
Discover what to expect, how to observe the eclipse, and why the Moon turns red during the event.
As the countdown to the year's first total lunar eclipse begins, here's what to know about the difference between a lunar ...