Skip to comments.Astronomy Picture of the Day - Ganymede from Juno
Posted on 11/28/2023 12:17:41 PM PST 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 in 2021 by NASA's robotic Juno spacecraft when it passed by 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.
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.
Yeah, are they saying the presence of the tiny probe affected the orbital dynamics?
I think they’re saying the moon caused the probe to slingshot around Jupiter.
Found this that clarifies:
“Juno has been orbiting Jupiter for more than 2,505 Earth days and flown over 510 million miles (820 million kilometers).
The spacecraft arrived at Jupiter on July 4, 2016.
The first science flyby occurred 53 days later,
and the spacecraft continued with that orbital period
until its flyby of Ganymede on June 7, 2021,
which reduced its orbital period to 43 days.
The Europa flyby on Sept. 29, 2022,
reduced the orbital period to 38 days.
After the next two Io flybys, on May 16 and July 31,
Juno’s orbital period will remain fixed at 32 days.”
They are talking about spacecraft Juno’s orbit around Jupiter,
not Ganymede’s orbit.
I see two bears.
IMO, all the JWST $Billions should have been to directed to activities within our solar system and to advancing the efforts to return to the Moon and gettinng to Mars. Also, perhaps toward the detection of and mining of asteroid rare Earth metals.
I can’t see how images and guesstimated info from hundreds of thousands to billions of years ago gains much for humanity.
Juno’s speed really picked up after zooming thru those moon’s respective gravity wells.
At first glance, it looks like it got splattered with space bird poop.
Yes. That is a moon, so where is the flag? Maybe on Mars.
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