Starship Asterisk*

Ann wrote: ↑Sun Jun 28, 2020 6:19 am I remember how excited I was when Voyager 1 started sending home its pictures of Jupiter.

Dioskur wrote: ↑Sun Jun 28, 2020 1:06 pm Nevermind - it's stated that it's Io's shadow. I must've been still half-asleep when I read the description. I'm sorry for the commotion.

johnnydeep wrote: ↑Sun Jun 28, 2020 2:25 pm FYI, you can edit your own posts to add corrections or clarifications!

https://www.space.com/26331-jupiter-galilean-moons-bright-eclipse.html wrote:

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Surprise! Big Jupiter Moons Shine Even When Eclipsed
By Charles Q. Choi June 23, 2014

<<When eclipsed [by Jupiter], the luminosity of these moons was one-millionth to one-ten-millionth of their uneclipsed brightness — dim enough for the phenomenon to remain undetected until now, even though researchers have observed the Galilean moons in eclipse for centuries.

It remains uncertain what causes the slight brightening. However, Kohji Tsumura, an astronomer at Tohoku University in Japan, and his colleagues believe the upper part of Jupiter's atmosphere may be responsible. [Tsumura and his colleagues detailed their findings in the July 10 issue of The Astronomical Journal.]

Jupiter's clouds, which give the giant planet its striped appearance, grow from tiny particles called aerosols or hazes. Prior studies have hinted that these hazes form in the upper part of Jupiter's atmosphere. The researchers suggested that hazes in the upper atmosphere may scatter sunlight onto the Galilean satellites, illuminating them. This effect is similar to the one that causes Earth's moon to look red during a total lunar eclipse.

The new finding could help scientists analyze the hazes in Jupiter's atmosphere, which are otherwise difficult to study. By studying the spectrum of light from the eclipsed Jupiter moons, the researchers could learn about the compositions of the hazes, Tsumura said. In addition, this new method of studying Jupiter's upper atmosphere could help researchers investigate the atmospheres of exoplanets around distant stars. Exoplanets are often seen when they pass in front of their stars, and scientists can glean details about their atmospheres when starlight passes through them. "It is important to study sunlight transmitted through the atmospheres of the planets in our solar system for comparison with light through the atmospheres around the exoplanets," Tsumura said.>>

ta152h0 wrote: ↑Sun Jun 28, 2020 5:48 pm Yesterday I saw, on a TY program, How the Universe Works, that the moon is possibly hollow. Is that still being looked at? pass the ice cold one.

bystander wrote: ↑Sun Jun 28, 2020 2:33 pm

johnnydeep wrote: ↑Sun Jun 28, 2020 2:25 pm FYI, you can edit your own posts to add corrections or clarifications!

Not if your not a member.

orin stepanek wrote: ↑Sun Jun 28, 2020 11:03 am EuropaJupiter_Voyager_960.jpg
To me, the red spot on this photo looks like a hole opening deep into Jupiter!

Eli Galanti wrote:

Jupiter's Great Red Spot (GRS) is the most dominant and long-lived feature in Jupiter's atmosphere. However, whether this is a shallow atmospheric feature or a deeply rooted vortex has remained an open question. The recent gravity measurements, performed by the Juno mission, enabled the analysis of Jupiter's zonal flows that were found to penetrate to a depth of 3,000km below the cloud-level.

Ann wrote: ↑Sun Jun 28, 2020 6:03 pm

orin stepanek wrote:
To me, the red spot on this photo looks like a hole opening deep into Jupiter!

Eli Galanti wrote:
Jupiter's Great Red Spot (GRS) is the most dominant and long-lived feature in Jupiter's atmosphere. However, whether this is a shallow atmospheric feature or a deeply rooted vortex has remained an open question. The recent gravity measurements, performed by the Juno mission, enabled the analysis of Jupiter's zonal flows that were found to penetrate to a depth of 3,000km below the cloud-level.

Rafa Ruiz wrote: ↑Tue Jul 07, 2020 4:06 pm When were these pictures taken by the probe?