Lunar Eclipse: What It Is, When It Happens, and How to Watch

If you look up on a clear night and see the Moon turn a deep red, you’re witnessing a lunar eclipse. It’s a natural event where Earth blocks the Sun’s light from reaching the Moon. The Earth’s shadow falls on the Moon, making it look darker or copper‑colored. Unlike a solar eclipse, you don’t need special glasses—just a dark sky and a little patience.

Types of Lunar Eclipses

There are three kinds. A total eclipse covers the whole Moon in Earth’s umbra, giving that famous reddish hue. A partial eclipse only covers part of the Moon, so you’ll see a bite taken out of it. A penumbral eclipse is the faintest; the Moon passes through the outer part of Earth’s shadow and looks only a shade dimmer. Most people spot a total or partial event because they’re brighter and easier to see.

When’s the Next One?

Check the eclipse calendar for dates that work for you. In 2025 we have a total lunar eclipse on March 14 and another on September 7. The best viewing windows are a few hours before and after the peak, when the Moon is rising or setting. If you live in the UK, the March eclipse will be visible low on the western horizon after sunset, while the September one rises high in the east just after midnight.

To get the most out of the show, find a dark spot away from city lights. A park, countryside field, or even a backyard with a clear view works. Bring a comfortable chair and maybe a warm drink—nighttime can get chilly. If you have a telescope or binoculars, you’ll see the Moon’s surface details stand out, but they’re not required.

Timing is key. The eclipse’s maximum phase lasts anywhere from a few minutes to over an hour, depending on the type. Use a smartphone app or a simple online timer to track the start, peak, and end. Many apps send alerts when the Moon moves into Earth’s shadow, so you won’t miss the action.

Finally, share the experience. Take photos with a DSLR or even a phone; set the exposure low and focus on the Moon’s red tint. Post your shots with #LunarEclipse and you’ll see how many others are watching the same event. Whether you’re a seasoned astronomer or just curious, a lunar eclipse is a free, awe‑inspiring show that anyone can enjoy.