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Astronomy Picture of the Day - Ganymede from Juno
APOD.NASA.gov ^ | 14 Jun, 2021 | Image Credit: NASA/JPL-Caltech/SwRI/MSSS; Processing & License: Kevin M. Gill;

Posted on 06/14/2021 4:49:31 PM PDT by MtnClimber

Explanation: What does the largest moon in the Solar System look like? Jupiter's moon Ganymede, larger than even Mercury and Pluto, has an icy surface speckled with bright young craters overlying a mixture of older, darker, more cratered terrain laced with grooves and ridges. The cause of the grooved terrain remains a topic of research, with a leading hypothesis relating it to shifting ice plates. Ganymede is thought to have an ocean layer that contains more water than Earth -- and might contain life. Like Earth's Moon, Ganymede keeps the same face towards its central planet, in this case Jupiter. The featured image was captured last week by NASA's robotic Juno spacecraft as it passed only about 1000 kilometers above the immense moon. The close pass reduced Juno's orbital period around Jupiter from 53 days to 43 days. Juno continues to study the giant planet's high gravity, unusual magnetic field, and complex cloud structures.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: nasa
To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 06/14/2021 4:49:31 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 06/14/2021 4:49:45 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; America_Right; Art in Idaho; AZ .44 MAG; ...
Pinging the APOD list.

🪐 🌟 🌌

The zoom feature explained in post #1 works very well with this image.
3 posted on 06/14/2021 4:50:52 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber

bttt


4 posted on 06/14/2021 4:51:35 PM PDT by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: MtnClimber

Looks like a lot of ATV activity. ????


5 posted on 06/14/2021 4:55:20 PM PDT by Bringbackthedraft (In politicians we get what we deserve, usually the best that money can buy, guaranteed.)
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To: MtnClimber

Perfect place for ol’ Dr. Phuk-shi, don’t you think?


6 posted on 06/14/2021 5:01:20 PM PDT by AFB-XYZ (Stand up, or bend over)
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To: Bringbackthedraft

Somebody has been using that moon for target practice.

;-)


7 posted on 06/14/2021 5:31:55 PM PDT by cgbg (A kleptocracy--if they can keep it. Think of it as the Cantillon Effect in action.)
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To: cgbg

Short timer!


8 posted on 06/14/2021 5:38:58 PM PDT by Sawdring
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To: MtnClimber

If it’s all ice... Just imagine.

Water for drinking, hydrogen for fuel, oxygen for breathing.

It’s as if God placed it right where we’d need it some day.


9 posted on 06/14/2021 5:43:45 PM PDT by Alas Babylon! ("You, the American people, are my only special interest." --President Donald J. Trump)
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To: MtnClimber

“Juno the reason for the grooves on Ganymede?”

“No, but Alaska.”


10 posted on 06/14/2021 7:01:38 PM PDT by Ken H (Trump won.)
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To: MtnClimber

Those aliens and their ATVs are ruining the place.


11 posted on 06/14/2021 7:22:00 PM PDT by doorgunner69 ("Those who vote decide nothing. Those who count the vote decide everything.." -Joseph Stalin)
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To: doorgunner69

LGBTQ month cannot even stay away from Jovan moons....sick.


12 posted on 06/14/2021 8:01:33 PM PDT by Michigan Bowhunter
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To: MtnClimber

Thank God for the planet Jupiter.

L


13 posted on 06/14/2021 8:02:30 PM PDT by Lurker (Peaceful coexistence with the Left is not possible. Stop pretending that it is. )
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To: cgbg

That would be God. Old Testament version, mostly.


14 posted on 06/15/2021 12:24:22 AM PDT by Paul R. (You know your pullets are dumb if they don't recognize a half Whopper as food!)
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To: Alas Babylon!

Even if it’s only 10% water (or water ice), if it’s accessible, we’re in business (someday). Most observations indicate a lot more than 10% water / ice by volume, with ice on or very near the surface. It is a lot more H2O than Earth has.

https://www.businessinsider.com/water-space-volume-planets-moons-2016-10


15 posted on 06/15/2021 1:38:21 AM PDT by Paul R. (You know your pullets are dumb if they don't recognize a half Whopper as food!)
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To: Bringbackthedraft

If it’s not too rough, maybe my teenage daughter can practice driving there. Oh, wait...

Well, maybe her granddaughter.


16 posted on 06/15/2021 1:40:26 AM PDT by Paul R. (You know your pullets are dumb if they don't recognize a half Whopper as food!)
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To: Michigan Bowhunter

https://en.wikipedia.org/wiki/Ganymede_(mythology)


17 posted on 06/15/2021 5:45:37 AM PDT by Red Badger (You can't wait until life isn't hard anymore before you decide to be happy............. Nightbirde)
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To: Lurker

Yup. We’ve have been toast a hundred times over if it weren’t for that big guy playing cosmic shortstop.


18 posted on 06/15/2021 7:42:39 AM PDT by jmacusa (America. Founded by geniuses . Now governed by idiots.)
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