APOD: Mimas in Saturnlight (2019 Aug 03)

Comments and questions about the APOD on the main view screen.
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APOD: Mimas in Saturnlight (2019 Aug 03)

Post by APOD Robot » Sat Aug 03, 2019 4:11 am

Image Mimas in Saturnlight

Explanation: Peering from the shadows, the Saturn-facing hemisphere of Mimas lies in near darkness alongside a dramatic sunlit crescent. The mosaic was captured near the Cassini spacecraft's final close approach on January 30, 2017. Cassini's camera was pointed in a nearly sunward direction only 45,000 kilometers from Mimas. The result is one of the highest resolution views of the icy, crater-pocked, 400 kilometer diameter moon. An enhanced version better reveals the Saturn-facing hemisphere of the synchronously rotating moon lit by sunlight reflected from Saturn itself. To see it, slide your cursor over the image (or follow this link). Other Cassini images of Mimas include the small moon's large and ominous Herschel Crater.

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by Boomer12k » Sat Aug 03, 2019 8:53 am

Awesome..."Saturn Glow"....

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by orin stepanek » Sat Aug 03, 2019 10:46 am

Amazing what you can see with a cursor! :wink:
Orin

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by DL MARTIN » Sat Aug 03, 2019 11:39 am

Is that a Titleist or Callaway?

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by starsurfer » Sat Aug 03, 2019 1:01 pm

This picture makes me think of the WR 16 nebula for some reason? :D

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by neufer » Sat Aug 03, 2019 3:02 pm

DL MARTIN wrote:
Sat Aug 03, 2019 11:39 am

Is that a Titleist or Callaway?
https://en.wikipedia.org/wiki/Golf_ball

Under the rules of golf, a golf ball has:
  • a mass no more than 45.93 grams
    a diameter not less than 4.267 cm.
Mimas mean density = 1.1479 g/cm3 : Albedo = 0.962 :!:
Max. golfball density = 1.1291 g/cm3 : Albedo ~ 0.9

[Comparable Mimas Black Hole "Cup" Size: 170 solar mass.]
Art Neuendorffer

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orin stepanek
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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by orin stepanek » Sat Aug 03, 2019 7:19 pm

DL MARTIN wrote:
Sat Aug 03, 2019 11:39 am
Is that a Titleist or Callaway?
When we were kids; we waded the CC creeks for golf balls! Was a good way to earn spending money. Once found a Tommy Armor 60 that netted 2 bits! Was big money back in the early '50s! :lol2:
Callaway.
Maxfli.
TaylorMade.
Titleist.
Bridgestone.
Srixon.
Top-Flite.
Volvik.
:mrgreen:
Orin

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by neufer » Sat Aug 03, 2019 7:58 pm

orin stepanek wrote:
Sat Aug 03, 2019 7:19 pm
DL MARTIN wrote:
Sat Aug 03, 2019 11:39 am

Is that a Titleist or Callaway?
When we were kids; we waded the CC creeks for golf balls! Was a good way to earn spending money.

Once found a Tommy Armor 60 that netted 2 bits! Was big money back in the early '50s! :lol2:
https://en.wikipedia.org/wiki/Tommy_Armour wrote:
<<Thomas Dickson Armour (24 September 1896 – 11 September 1968) was a Scottish-American professional golfer nicknamed The Silver Scot. He was the winner of three of golf's major championships, the 1927 U.S. Open, 1930 PGA Championship, and the 1931 Open Championship.

Armour was born on 24 September 1896 in Edinburgh, Scotland, the son of Martha Dickson and her husband George Armour, a baker.

At the outbreak of World War I enlisted with the Black Watch and was a machine-gunner, he rose from a private to Staff Major in the Tank Corps. His conduct earned him an audience with George V. However, he lost his sight to a mustard gas explosion and surgeons had to add a metal plate to his head and left arm. During his convalescence, he regained the sight of his right eye, and began playing much more golf.

At the Shawnee Open in 1927, Armour scored the first ever "Archaeopteryx" (15 or more over par) when he made a 23 on a par 5, for 18-over par. This still stands as the highest score on one hole in PGA history. This historic performance happened just one week after winning the U.S. Open.>>
Art Neuendorffer

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Mimas 2019

Post by ta152h0 » Sat Aug 03, 2019 11:15 pm

Glad to be still be able to see it despite my eyes getting weaker. Pass the ice cold one.
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Mal-heure

Post by neufer » Sun Aug 04, 2019 6:45 pm

--------------------------------------------------------------------------------------------------
<<Lauren and Alice are talking long distance on the phone. Lauren is in an East-Coast US state which borders the Atlantic Ocean, and Alice is in a West-Coast state which borders the Pacific Ocean. Lauren asks Alice: "What time is it?" Alice replies and Lauren says: "That's really odd. It's the same time here!" How can this be?>>
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<<Alice is in Eastern Oregon (in Mountain time) and Lauren is in Western Florida (in Central time). It is the night that daylight-savings time changes back to standard time any time after 1:00 and before 2:00 AM.>>
https://en.wikipedia.org/wiki/Florida_Panhandle wrote:
Click to play embedded YouTube video.
<<References to the Florida Panhandle always include the ten counties west of the Apalachicola River. These western counties also lie in the Central Time Zone (with the exception of Gulf County, which is divided between the Eastern and Central Time zones), while the rest of the state is in the Eastern Time Zone. Seaside is an unincorporated master-planned community on the Florida panhandle in Walton County. One of the first communities in America designed on the principles of New Urbanism, Seaside rose to global fame as being the main filming location of the movie The Truman Show.>>
https://en.wikipedia.org/wiki/Malheur_County,_Oregon wrote:
<<Malheur County is a county in the southeast corner of the U.S. state of Oregon. Its county seat is Vale, and its largest city is Ontario. Malheur County is one of the few counties in the United States with two time zones. Most of the county is in the Mountain Time Zone, but a small portion in the south is in the Pacific Time Zone. The county was named after the Malheur River, which runs through the county. The word "malheur" is French for misfortune or tragedy. The name was attached to the river by French Canadian voyageur trappers working for the North West Company on the Snake County Expeditions of Donald Mackenzie as early as 1818 for the unfortunate circumstance that some beaver furs they had cached there were snatched by Indians. The river lived up to its name a second time in 1845, when mountain man Stephen Meek, seeking a faster route along the Oregon Trail, led a migrant party up the river valley into the high desert along a route that has since become known as the Meek Cutoff. After leaving the river valley the party was unable to find a water supply and lost 23 people by the time they reached The Dalles on the Columbia River.>>
Art Neuendorffer

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by pferkul » Mon Aug 05, 2019 2:36 pm

I brightened-up your image of Enceladus from https://apod.nasa.gov/apod/ap170209.html for a similar effect.
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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by TheOtherBruce » Mon Aug 05, 2019 10:42 pm

Interesting; I can see a good few craters with a deep bowl shape and a flat mass of fill at the bottom, unlike the sort of craters seen on the Moon or Mercury. Could there be any significance to this, like unusually low velocity impacts, or low surface gravity?

Wild idea; does anyone else think they look like the sort of impacts you get in dry sand at the beach? Maybe this is saying something about the top levels of the surface?
This universe shipped by weight, not by volume.
Some expansion of the contents may have occurred during shipment.

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by neufer » Tue Aug 06, 2019 12:09 am


TheOtherBruce wrote:
Mon Aug 05, 2019 10:42 pm

Interesting; I can see a good few craters with a deep bowl shape and a flat mass of fill at the bottom, unlike the sort of craters seen on the Moon or Mercury. Could there be any significance to this, like unusually low velocity impacts, or low surface gravity?
:arrow: The lack of craters larger than 20 km in diameter around the South Pole may be and indication that that the cratering is from low impact material from a former Saturn ring.
https://en.wikipedia.org/wiki/Mimas_(moon) wrote:
<<The Mimantean surface is saturated with smaller impact craters. Although Mimas is heavily cratered, the cratering is not uniform. Most of the surface is covered with craters larger than 40 km in diameter, but in the south polar region, there are generally no craters larger than 20 km in diameter.>>
Art Neuendorffer

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Re: APOD: Mimas in Saturnlight (2019 Aug 03)

Post by Odysseus » Thu Aug 08, 2019 6:44 pm

starsurfer wrote:
Sat Aug 03, 2019 1:01 pm
This picture makes me think of the WR 16 nebula for some reason?
Interesting, is that formation an actual sphere? Or does it just appear like that from our angle.