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Partial lunar eclipse on Monday

The Moon, partially eclipsed.

Monday, June 4, will see a partial eclipse of the Moon take place.

FOR THOSE WHO ARE ON GOOD TERMS with the weather gods, on Monday, June 4, there will be a partial eclipse of the Moon to enjoy.

A lunar eclipse happens when the Moon moves into the Earth’s shadow. If it goes through the middle of the shadow, it is a total lunar eclipse. If it “cuts the corner” of the shadow, we get a partial eclipse.

There are usually two or three lunar eclipses each year, but they’re not always visible from the same place. From any particular spot on Earth, you might see one or two per year.

The Moon will begin to move into the darkest part of Earth’s shadow at 8:00pm, Sydney time on Monday, June 4. In Perth, it will already be underway by the time the Moon rises. Mid-eclipse will be at 9:00pm Sydney time, and the whole thing will be over by 10:05pm, Sydney time.

At mid-eclipse, about 40% of the Moon’s diameter will be covered by Earth’s shadow – it might even go a reddish colour from sunlight bent through Earth’s atmosphere. Then the Moon will slowly move out of the shadow.

As long as the weather is clear, you won’t have any difficulty spotting the Moon and the eclipse. You won’t need a telescope or binoculars to see it –  just your own eyes are enough. And unlike solar eclipses, lunar eclipses are safe to watch.

They also happen slowly, so the best idea is to go outside every 15 minutes or so and see how it has changed.

Here’s a video from NASA that shows what stargazers in North America can expect to see:

After this, the next big eclipse for Australians will be a total eclipse of the Sun on the morning of Nov 14, 2012 – the last one to be seen in Australia until the year 2028! Totality will be seen only along a narrow swathe of far north Queensland near Cairns. Everyone else will see a partial eclipse.

Story by Jonathan Nally, editor, SpaceInfo.com.au

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Lunar eclipse Saturday night

Partial lunar eclipse

The June 26 partial lunar eclipse will see just over half the Moon's diameter covered by the Earth's shadow at the point of maximum eclipse, 9:19pm Australian eastern standard time.

  • Partial lunar eclipse, Saturday, June 26
  • Half the Moon will be covered at mid-eclipse
  • Easy to see; you don’t need a telescope

Australian stargazers will be treated to a partial lunar eclipse on Saturday, June 26.

All of Australia will see it, weather permitting (although in WA the eclipse will already be underway by the time the Moon rises over the eastern horizon).

An eclipse of the Moon happens when the Sun, Earth and Moon line up, with the Earth in the middle, and the Earth’s shadow is cast onto the Moon.

If the Moon goes right through the middle of Earth’s shadow, there is a total eclipse.

If it “cuts the corner” of the shadow, there is a partial eclipse, which is what we’ll get on Saturday.

The main eclipse action will be from 8:17pm to 11:00pm, Australian eastern standard time (AEST). (Do the usual time adjustments if you live in a different time zone.)

Lunar eclipses are perfectly safe to watch (unlike solar eclipses), but they happen quite slowly. The best bet is to go outside and check on it every 15-20 minutes. And you don’t need a telescope to view, just use your unaided eyes.

Generally, there are two lunar eclipses and two solar eclipses each year, but they’re not always visible from the same places each time. For any particular location, there is usually one lunar eclipse each year, with a solar eclipse every 2-3 years.

What will we see on Saturday night?

There are two parts to Earth’s shadow: a not-so-dark outer part (the penumbra), and a darker inner part (the umbra).

The Moon will start going into the penumbra at 6:55pm AEST, but it won’t be very noticeable.

It will enter the umbra around 8:17pm AEST, by which time a small, dark “bite” will seem to have been taken out of it. Mid-eclipse will occur at 9:38pm AEST, with about half the Moon’s diameter in shadow. Then the stages will work in reverse, with the Moon leaving the darker part of the shadow at 11:00pm AEST.

Future eclipses

Australian stargazers will just catch the end of a total lunar eclipse in December this year, and the end of another one in June 2011.

There’ll be a solar eclipse in July this year, but Australians won’t see it. However, we’ll get a full view of the total lunar eclipse in December 2011.

The next big total solar eclipse visible from Australia will be seen from Cape York in November 2012.

· Partial lunar eclipse, Saturday, June 26

· Half the Moon will be covered at mid-eclipse

· Easy to see; you don’t need a telescope

Australian stargazers will be treated to a partial lunar eclipse on Saturday, June 26.

All of Australia will see it, weather permitting (although in WA the eclipse will already be underway by the time the Moon rises over the eastern horizon).

An eclipse of the Moon happens when the Sun, Earth and Moon line up, with the Earth in the middle, and the Earth’s shadow is cast onto the Moon.

If the Moon goes right through the middle of Earth’s shadow, there is a total eclipse.

If it “cuts the corner” of the shadow, there is a partial eclipse, which is what we’ll get on Saturday.

The main eclipse action will be from 8:17pm to 11:00pm, Australian eastern standard time (AEST). (Do the usual time adjustments if you live in a different time zone.)

Lunar eclipses are perfectly safe to watch (unlike solar eclipses), but they happen quite slowly. The best bet is to go outside and check on it every 15-20 minutes. And you don’t need a telescope to view, just use your unaided eyes.

Generally, there are two lunar eclipses and two solar eclipses each year, but they’re not always visible from the same places each time. For any particular location, there is usually one lunar eclipse each year, with a solar eclipse every 2-3 years.

What will we see on Saturday night?

There are two parts to Earth’s shadow: a not-so-dark outer part (the penumbra), and a darker inner part (the umbra).

The Moon will start going into the penumbra at 6:55pm AEST, but it won’t be very noticeable.

It will enter the umbra around 8:17pm AEST, by which time a small, dark “bite” will seem to have been taken out of it. Mid-eclipse will occur at 9:38pm AEST, with about half the Moon’s diameter in shadow. Then the stages will work in reverse, with the Moon leaving the darker part of the shadow at 11:00pm AEST.

Future eclipses

Australian stargazers will just catch the end of a total lunar eclipse in December this year, and the end of another one in June 2011.

There’ll be a solar eclipse in July this year, but Australians won’t see it. However, we’ll get a full view of the total lunar eclipse in December 2011.

The next big total solar eclipse visible from Australia will be seen from Cape York in November 2012.