08-26-2007, 10:16 PM
Chee Chee Leung
August 27, 2007
AS A sky show, it has kept Australian star-gazers waiting for seven years.
A spectacular total lunar eclipse will be visible across the country tomorrow at full moon, when the sun, Earth and moon are in perfect alignment.
The Earth casts a shadow across the moon and blocks out the sunlight, causing the moon to become dark, almost disappearing.
Although it is a total eclipse, the moon will not completely black out. Some sunlight will reach it, bent by the Earth's atmosphere.
If the atmosphere is dusty, the moon could appear blood-red, as the dust particles filter out some of the green, blue and violet rays in sunlight. Melbourne Planetarium astronomer Tanya Hill said the eclipse was "a lovely thing" to watch. "It's like a big bite being take out of the moon," she said.
The partial phase of the eclipse begins just before 7pm. During this time, the Earth's shadow is curved, one of the ancients' first clues the planet was spherical. The total lunar eclipse will be from 7.52pm to 9.22pm.
After this, the moon will slowly emerge from Earth's shadow.
The Astronomical Society of Victoria said it would be the best lunar eclipse in years, and encouraged adults and children to take advantage of the convenient time.
"This is a great chance for them to see the workings of the solar system for themselves," said vice-president Perry Vlahos.
He said the eclipse would also allow people to spot brilliant stars and gas clouds that would otherwise be drowned out by moonlight.
The eclipse can be seen with the naked eye, but binoculars or a telescope would be better. The last total lunar eclipse was in July 2000. The next one visible in Victoria will be in 2011.
ââ The Astronomical Society of Victoria is inviting the public to view the eclipse at the Victoria Gardens Shopping Centre in Richmond. About 20 telescopes will be set up on the top deck of the IKEA car park, with the public asked for a gold-coin donation to look through the telescopes.
http://www.theage.com.au/news/national/e...46407.html
Total lunar eclipse early Tuesday
By COLLEEN SLEVIN, Associated Press
The Earth's shadow will creep across the moon's surface early Tuesday, slowly eclipsing it and turning it to shades of orange and red.
The total lunar eclipse, the second this year, will be visible in North and South America, especially in the West. People in the Pacific islands, eastern Asia, Australia and New Zealand also will be able to view it if skies are clear.
People in Europe, Africa or the Middle East, who had the best view of the last total lunar eclipse in March, won't see this one because the moon will have set when the partial eclipse begins at 4:51 a.m. EDT. The full eclipse will begin an hour later at 5:52 a.m. EDT.
An eclipse occurs when Earth passes between the sun and the moon, blocking the sun's light. It's rare because the moon is usually either above or below the plane of Earth's orbit.
Since the Earth is bigger than the moon, the process of the Earth's shadow taking a bigger and bigger "bite" out of the moon, totally eclipsing it before the shadow recedes, lasts about 3 1/2 hours, said Doug Duncan, director of the University of Colorado's Fiske Planetarium. The total eclipse phase, in which the moon has an orange or reddish glow, lasts about 1 1/2 hours.
The full eclipse will be visible across the United States, but East Coast viewers will only have about a half-hour to see it before the sun begins to rise and the moon sets. Skywatchers in the West will get the full show.
In eastern Asia, the moon will rise in various stages of eclipse.
During the full eclipse, the moon won't be completely dark because some light still reaches it around the edges of the Earth. The light is refracted as it passes through our atmosphere, scattering blue light ââ¬â which is why the sky is blue ââ¬â but sending reddish light onto the moon.
"When someone asks why is it (the moon) red, you can say because the sky is blue," Duncan said.
The next total lunar eclipse occurs Feb. 21, 2008, and will be visible from the Americas, Europe and Asia.
___
On the Net:
NASA Lunar Eclipse Page:
http://sunearth.gsfc.nasa.gov/eclipse/LE...E2007Aug28
August 27, 2007
AS A sky show, it has kept Australian star-gazers waiting for seven years.
A spectacular total lunar eclipse will be visible across the country tomorrow at full moon, when the sun, Earth and moon are in perfect alignment.
The Earth casts a shadow across the moon and blocks out the sunlight, causing the moon to become dark, almost disappearing.
Although it is a total eclipse, the moon will not completely black out. Some sunlight will reach it, bent by the Earth's atmosphere.
If the atmosphere is dusty, the moon could appear blood-red, as the dust particles filter out some of the green, blue and violet rays in sunlight. Melbourne Planetarium astronomer Tanya Hill said the eclipse was "a lovely thing" to watch. "It's like a big bite being take out of the moon," she said.
The partial phase of the eclipse begins just before 7pm. During this time, the Earth's shadow is curved, one of the ancients' first clues the planet was spherical. The total lunar eclipse will be from 7.52pm to 9.22pm.
After this, the moon will slowly emerge from Earth's shadow.
The Astronomical Society of Victoria said it would be the best lunar eclipse in years, and encouraged adults and children to take advantage of the convenient time.
"This is a great chance for them to see the workings of the solar system for themselves," said vice-president Perry Vlahos.
He said the eclipse would also allow people to spot brilliant stars and gas clouds that would otherwise be drowned out by moonlight.
The eclipse can be seen with the naked eye, but binoculars or a telescope would be better. The last total lunar eclipse was in July 2000. The next one visible in Victoria will be in 2011.
ââ The Astronomical Society of Victoria is inviting the public to view the eclipse at the Victoria Gardens Shopping Centre in Richmond. About 20 telescopes will be set up on the top deck of the IKEA car park, with the public asked for a gold-coin donation to look through the telescopes.
http://www.theage.com.au/news/national/e...46407.html
Total lunar eclipse early Tuesday
By COLLEEN SLEVIN, Associated Press
The Earth's shadow will creep across the moon's surface early Tuesday, slowly eclipsing it and turning it to shades of orange and red.
The total lunar eclipse, the second this year, will be visible in North and South America, especially in the West. People in the Pacific islands, eastern Asia, Australia and New Zealand also will be able to view it if skies are clear.
People in Europe, Africa or the Middle East, who had the best view of the last total lunar eclipse in March, won't see this one because the moon will have set when the partial eclipse begins at 4:51 a.m. EDT. The full eclipse will begin an hour later at 5:52 a.m. EDT.
An eclipse occurs when Earth passes between the sun and the moon, blocking the sun's light. It's rare because the moon is usually either above or below the plane of Earth's orbit.
Since the Earth is bigger than the moon, the process of the Earth's shadow taking a bigger and bigger "bite" out of the moon, totally eclipsing it before the shadow recedes, lasts about 3 1/2 hours, said Doug Duncan, director of the University of Colorado's Fiske Planetarium. The total eclipse phase, in which the moon has an orange or reddish glow, lasts about 1 1/2 hours.
The full eclipse will be visible across the United States, but East Coast viewers will only have about a half-hour to see it before the sun begins to rise and the moon sets. Skywatchers in the West will get the full show.
In eastern Asia, the moon will rise in various stages of eclipse.
During the full eclipse, the moon won't be completely dark because some light still reaches it around the edges of the Earth. The light is refracted as it passes through our atmosphere, scattering blue light ââ¬â which is why the sky is blue ââ¬â but sending reddish light onto the moon.
"When someone asks why is it (the moon) red, you can say because the sky is blue," Duncan said.
The next total lunar eclipse occurs Feb. 21, 2008, and will be visible from the Americas, Europe and Asia.
___
On the Net:
NASA Lunar Eclipse Page:
http://sunearth.gsfc.nasa.gov/eclipse/LE...E2007Aug28