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Thursday, May 15, 2003 (in Europe, the early morning hours of Friday, May 16, 2003) will see the first Lunar eclipse of the year. This total eclipse will be visible from North and South America as well as Europe, Africa, and Antarctica.
What Is a Lunar Eclipse?
Earth’s shadow is comprised of two portions; the Penumbra, which blocks some (but not all) of the Sun’s rays, and the Umbra, which blocks all direct sun. Lunar eclipses can only happen during Full Moons, if the Moon enters some portion of the Earth’s shadow. If it just passes through a part of the Umbra, it’s called a partial eclipse, but when the Moon passes completely through the Umbral shadow, it’s a total eclipse.
Anyone standing on the Lunar surface during this time, would see the Earth eclipsing the Sun.
When Is the Best Viewing Time For Where I Live?
Check out the Lunar Eclipse Calculator from the US Naval Observatory.
Is Every Lunar Eclipse Total?
Astronomers actually list three types of Lunar eclipses.
1. Penumbral Lunar Eclipse
- The Moon passes through Earth's penumbral shadow.
- These events are typically not of interest to most people, since they tend to produce subtle changes and aren’t easy to observe.
- A portion of the Moon passes through Earth's umbral shadow.
- It’s easier to see these events, and may be worth the effort to view.
- The entire Moon passes through Earth's umbral shadow.
- It’s well worth the time to watch these events, as they can produce some brilliant and beautiful colors.
Can I Safely Watch?
Lunar eclipses, unlike solar eclipses, aren’t dangerous to watch. They are extremely easy to see with the naked eye, but a low powered pair of binoculars can help enhance the viewing.
Where Can I Learn More?
Check the Lunar Eclipses For Beginners Guide by Fred Espanak.
