by Ann » Mon Sep 05, 2016 5:37 am
Wolf wrote:Ann wrote:Ah, the beauty of Jupiter. What a great photo this old Voyager image is. And what a pity that Juno is apparently not going to give us anything like that kind of photos.
Nevertheless, Juno will undoubtedly give us a lot of new information about Jupiter, and I'm eagerly waiting for it.
Ann
Ann,
If we could
Pantropy in as Clifford D. Simak wrote in 1944, what would be the color of the Jovian sky from the “surface”?
Like this?
Click to play embedded YouTube video.
Wikipedia wrote:
Jupiter has the largest planetary atmosphere in the Solar System, spanning over 5,000 km (3,000 mi) in altitude.[46][47]
Because Jupiter has no surface, the base of its atmosphere is usually considered to be the point at which atmospheric pressure is equal to 100 kPa (1.0 bar).
According to Wikipedia, the height of Jupiter's atmosphere is 5,000 km. What would be the color of the sky from the bottom of an extremely thick and cloudy 5,000 km high atmosphere? Pitch black, I would say.
Okay, what would be the color of the Jovian sky near its cloud tops? Well, it just might be the same color as most of the clouds, which mostly range from creamy white to light brick orange. Or else, who knows, it might be pitch black interspersed with a generous sprinkling of stars.
Does Jupiter have a blue sky anywhere? All I can say about it is that I have never seen a picture suggesting that it does. That doesn't necessarily mean there isn't a blue sky at some upper level of the atmosphere of Jupiter.
Saturn. Image credit: Cassini Imaging Team, SSI, JPL, ESA, NASA
Pluto. Image credit: NASA/JHUAPL/SwRI
Whether or not Jupiter has any sort of blue sky anywhere in its atmosphere, both Saturn and Pluto do have some sort of blue skies.
APOD Robot wrote about Saturn:
The northern hemisphere of Saturn can appear partly blue for the same reason that Earth's skies can appear blue -- molecules in the cloudless portions of both planet's atmospheres are better at scattering blue light than red.
The same mechanism must be responsible for making Pluto's atmosphere blue. It wouldn't surprise me if some thin upper part of Jupiter's atmosphere has the same property and color.
Ann
[quote="Wolf"][quote="Ann"]Ah, the beauty of Jupiter. What a great photo this old Voyager image is. And what a pity that Juno is apparently not going to give us anything like that kind of photos.
Nevertheless, Juno will undoubtedly give us a lot of new information about Jupiter, and I'm eagerly waiting for it.
Ann[/quote]
Ann,
If we could [url=https://en.wikipedia.org/wiki/Pantropy]Pantropy[/url] in as Clifford D. Simak wrote in 1944, what would be the color of the Jovian sky from the “surface”?[/quote]
Like this?
[float=left][youtube]https://www.youtube.com/watch?v=BGY7od01jjM[/youtube][/float]
[quote][url=https://en.wikipedia.org/wiki/Jupiter#Atmosphere]Wikipedia[/url] wrote:
Jupiter has the largest planetary atmosphere in the Solar System, spanning over 5,000 km (3,000 mi) in altitude.[46][47] [b][i][color=#BF8000][size=120]Because Jupiter has no surface[/size][/color][/i][/b], the base of its atmosphere is usually considered to be the point at which atmospheric pressure is equal to 100 kPa (1.0 bar).[/quote]
According to Wikipedia, the height of Jupiter's atmosphere is 5,000 km. What would be the color of the sky from the bottom of an extremely thick and cloudy 5,000 km high atmosphere? Pitch black, I would say.
Okay, what would be the color of the Jovian sky near its cloud tops? Well, it just might be the same color as most of the clouds, which mostly range from creamy white to light brick orange. Or else, who knows, it might be pitch black interspersed with a generous sprinkling of stars.
Does Jupiter have a blue sky anywhere? All I can say about it is that I have never seen a picture suggesting that it does. That doesn't necessarily mean there isn't a blue sky at some upper level of the atmosphere of Jupiter.
[float=left][img2]https://lh3.googleusercontent.com/-bsMbbI8vhEw/U0oNqOYs-tI/AAAAAAAA7lE/w1T4SfSF6-c/w426-h420/saturnbluegold_cassini_1016.jpg[/img2][c][size=85]Saturn. Image credit: Cassini Imaging Team, SSI, JPL, ESA, NASA[/size][/c][/float] [float=right][img2]http://cdn.newsday.com/polopoly_fs/1.10974119.1471992110!/httpImage/image.jpg_gen/derivatives/display_960/image.jpg[/img2][c][size=85]Pluto. Image credit: NASA/JHUAPL/SwRI[/size][/c][/float]
Whether or not Jupiter has any sort of blue sky anywhere in its atmosphere, both Saturn and Pluto do have some sort of blue skies.
[quote][url=http://apod.nasa.gov/apod/ap140413.html]APOD Robot[/url] wrote about Saturn:
The northern hemisphere of Saturn can appear partly blue for the same reason that Earth's skies can appear blue -- molecules in the cloudless portions of both planet's atmospheres are better at scattering blue light than red. [/quote]
The same mechanism must be responsible for making Pluto's atmosphere blue. It wouldn't surprise me if some thin upper part of Jupiter's atmosphere has the same property and color.
Ann