Jupiter and the milky WaY (APOD 25 May 2007)
Jupiter and the milky WaY (APOD 25 May 2007)
This is what astronomy is all about
http://antwrp.gsfc.nasa.gov/apod/ap070525.html
Share this with young people.
http://antwrp.gsfc.nasa.gov/apod/ap070525.html
Share this with young people.
Wolf Kotenberg
The naked eye refreshes light pattern recognition approx 30 times per second while this image was taken with the lense open for (likely) approximately 240-300 seconds (4 to 5 minutes) exposure time. We could see exactly like this only if:
1) we could hold our eyes still and focused on a single object for more than 4 minutes without blinking.
2) we could alter the function of our eyes to allow for 4 minutes of light gathering without any visual pattern refresh.
What we would see is far less grand but still impresive on a clear, still, dark night.
1) we could hold our eyes still and focused on a single object for more than 4 minutes without blinking.
2) we could alter the function of our eyes to allow for 4 minutes of light gathering without any visual pattern refresh.
What we would see is far less grand but still impresive on a clear, still, dark night.
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- Asternaut
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Moon and Saturn
I wonder... while Saturn was behind the moon there may have been a moment when the moon's shadow crossed it. Though faint, could it have been discerned?
What a great pic that would be, the shadow of the moon (or the Earth) on Saturn.
What a great pic that would be, the shadow of the moon (or the Earth) on Saturn.
"The book of nature, which we have to read, is written by the finger of God." --Michael Faraday
- orin stepanek
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Re: Moon and Saturn
The Sun being larger than the moon and the great distance involved; there would be no shadow left. If you looked from Saturn you may be able to see a transit of the Earth and Moon across the face of the sun. With a telescope of course.Curious Servant wrote:I wonder... while Saturn was behind the moon there may have been a moment when the moon's shadow crossed it. Though faint, could it have been discerned?
What a great pic that would be, the shadow of the moon (or the Earth) on Saturn.
Orin
Orin
Smile today; tomorrow's another day!
Smile today; tomorrow's another day!