APOD: Charon: Moon of Pluto (2015 Oct 02)

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Expand view Topic review: APOD: Charon: Moon of Pluto (2015 Oct 02)

Here there be robots

by neufer » Sat May 14, 2016 10:06 pm

Re: Animals on Charon

by Beyond » Thu Oct 15, 2015 10:11 pm

BMAONE23 wrote:
Beyond wrote:
neufer wrote:
  • 1) an elephant
    2) a resting cat
    3) Mickey Mouse
    4) ...
I like #4.

There is also a "#4" on Pluto, preceding the Whale
Of course it could be a Number 6 too
I'd have to see morse of it to be able to tell.

Re: Animals on Charon

by BMAONE23 » Thu Oct 15, 2015 5:19 pm

Beyond wrote:
neufer wrote:
  • 1) an elephant
    2) a resting cat
    3) Mickey Mouse
    4) ...
I like #4.

There is also a "#4" on Pluto, preceding the Whale
Of course it could be a Number 6 too

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by ta152h0 » Thu Oct 15, 2015 2:58 pm

manta ray ?

Re: Animals on Charon

by Beyond » Thu Oct 15, 2015 2:57 pm

neufer wrote:
  • 1) an elephant
    2) a resting cat
    3) Mickey Mouse
    4) ...
I like #4.

Animals on Charon

by neufer » Thu Oct 15, 2015 2:49 pm

  • 1) an elephant
    2) a resting cat
    3) Mickey Mouse
    4) ...

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Chris Peterson » Thu Oct 15, 2015 1:54 pm

Durango wrote:"That makes it the largest satellite relative to its planet in the solar system." - apparently you (APOD) forget, that Pluto isn't a planet anymore.
But it is. Because "planet" has multiple meanings, and the phrase "relative to its planet" is still perfectly reasonable whether or not you are considering the IAU definition or not (which is, of course, one of the problems with the IAU definition).

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Durango » Thu Oct 15, 2015 1:52 pm

"That makes it the largest satellite relative to its planet in the solar system." - apparently you (APOD) forget, that Pluto isn't a planet anymore.

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by neufer » Sun Oct 04, 2015 12:59 pm

Click to play embedded YouTube video.
Ann wrote:
Lovely Lenox Globe, Art. I actually found the HICSYNT DRACONES on the map, south of "India" at far right.

But there will be no dragons on either Charon nor Pluto, not even dragons with antifreeze in their veins.
Voyager 1 might have seen reluctant dragons in the bottom Hemispheres :arrow:

(Lenox did a fairly decent job with Sweden but Norway is "way off in left field.")

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Ann » Sun Oct 04, 2015 4:54 am

Lovely Lenox Globe, Art. I actually found the HICSYNT DRACONES on the map, south of "India" at far right.
Image
But there will be no dragons on either Charon nor Pluto, not even dragons with antifreeze in their veins.

Ann

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by ta152h0 » Sun Oct 04, 2015 12:29 am

well, NASA is building a new super duper rocket and send it off in the direction of Saggitarius and vote for smart senators who we can send off o congress

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by neufer » Sat Oct 03, 2015 6:52 pm

Chris Peterson wrote:
BMAONE23 wrote:
Tis most unfortunate that we will have to wait another 124 years to be able to send another probe and image the other side of these worlds when the south polar region is in full sun
...there's absolutely no need to image it in the Sun, and in fact, we're capable of making better images that appear sunlit without using the Sun, I wouldn't characterize the situation a "unfortunate".
https://en.wikipedia.org/wiki/Terra_incognita wrote: <<Terra incognita or terra ignota (Latin "unknown land"; incognita is stressed on its second syllable in Latin, but with variation in pronunciation in English) is a term used in cartography for regions that have not been mapped or documented. The expression is believed to be first seen in Ptolemy's Geography circa AD 150. The term was reintroduced in the fifteenth century from the rediscovery of Ptolemy’s work during the Age of Discovery. The equivalent on French maps would be terres inconnues (plural form), and some English maps may show Parts Unknown. During the 19th century terra incognita disappeared from maps of the earth, since both the coastlines and the inner parts of the continents had been fully explored. But many other land surfaces in the solar system remain mostly un-mapped. :arrow:

An urban legend claims that cartographers labelled such regions with "Here be dragons". Although cartographers did claim that fantastic beasts existed in remote corners of the world and depicted such as decoration on their maps, only one known surviving map, the (ca. 1510) Lenox Globe, in the collection of the New York Public Library, actually says "Here be dragons" (using the Latin form "HIC SVNT DRACONES"). :arrow:

However, ancient Roman and Medieval cartographers did use the phrase HIC SVNT LEONES (Here are lions) when denoting unknown territories on maps.>>

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Chris Peterson » Sat Oct 03, 2015 4:01 pm

BMAONE23 wrote:
Chris Peterson wrote:
BMAONE23 wrote:Tis most unfortunate that we will have to wait another 124 years to be able to send another probe and image the other side of these worlds when the south polar region is in full sun
Sunlight is not a requirement for our studying that region.
To study...no. But to image in full sun as specified...yes
Sure. But since there's absolutely no need to image it in the Sun, and in fact, we're capable of making better images that appear sunlit without using the Sun, I wouldn't characterize the situation a "unfortunate".

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by BMAONE23 » Sat Oct 03, 2015 3:45 pm

Chris Peterson wrote:
BMAONE23 wrote:Tis most unfortunate that we will have to wait another 124 years to be able to send another probe and image the other side of these worlds when the south polar region is in full sun
Sunlight is not a requirement for our studying that region.
To study...no. But to image in full sun as specified...yes

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by neufer » Sat Oct 03, 2015 3:08 pm

BMAONE23 wrote:
Tis most unfortunate that we will have to wait another 124 years to be able to send another probe and image the other side of these worlds when the south polar region is in full sun
Especially considering that if Voyager 1 had paid less attention to Titan it could have mapped the other side of these worlds back in the 1986.
https://en.wikipedia.org/wiki/Voyager_1 wrote:
<<The trajectory chosen for Voyager 1 was designed around the optimum Titan flyby, which took it below the south pole of Saturn and out of the plane of the ecliptic, ending its planetary science mission. Had Voyager 1 failed or been unable to observe Titan, Voyager 2's trajectory would have been altered to incorporate the Titan flyby, precluding any visit to Uranus and Neptune. The trajectory Voyager 1 was launched into would not have allowed it to continue on to Uranus and Neptune, but could have been altered to avoid a Titan flyby and travel from Saturn to Pluto, arriving in 1986.>>

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Chris Peterson » Sat Oct 03, 2015 2:33 pm

BMAONE23 wrote:Tis most unfortunate that we will have to wait another 124 years to be able to send another probe and image the other side of these worlds when the south polar region is in full sun
Sunlight is not a requirement for our studying that region.

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by BMAONE23 » Sat Oct 03, 2015 5:44 am

Tis most unfortunate that we will have to wait another 124 years to be able to send another probe and image the other side of these worlds when the south polar region is in full sun

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Boomer12k » Sat Oct 03, 2015 2:45 am

I think something HIT the southern hemisphere...sunk much of it, caused Rilles..as things moved and then cooled. The Dark Material is some ejecti, from some type of geyser or something. Or something scraped through there...there is a depression there...almost like...No...couldn't be....MINED?????

Well...OK...some sort of EJECTI.....as it is powdered over some of the Rays of craters, like the one on the right side of the depression. If the crater was later, the material would be Lighter and on top of the Red? I think so. There is a partial looking crater on the left. The pattern looks like it goes left to right, and North....if an object hit a Mountain...at an ANGLE...then the spread of the debris might look similar? Momentum and direction?
There is also a GOUGE in the upper right, More Rilles on the far side?

Absolutely Fantastic Image and a Fascinating place....

:---[===] *

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by neufer » Fri Oct 02, 2015 9:24 pm

Click to play embedded YouTube video.
rpehlm wrote:
Why do most of Charon's craters have a central peak?
Rebound :arrow:

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Sawngrighter » Fri Oct 02, 2015 8:04 pm

Another ice ball?

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by rpehlm » Fri Oct 02, 2015 8:02 pm

Why do most of Charon's craters have a central peak?

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Ron-Astro Pharmacist » Fri Oct 02, 2015 5:48 pm

I Give Up.jpg
I Give Up.jpg (5.39 KiB) Viewed 10008 times
Why are they so different?

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by BMAONE23 » Fri Oct 02, 2015 5:15 pm

Ann wrote:
Donnageddon wrote:
Though the relief in that image is highly exaggerated.
That's true.
tmiller@d211.org wrote:
We need more cats
We certainly do!!! :kitty: But maybe Charon is Pluto's cat.
Bellerophon wrote:
Charon is another of those bodies that doesn't have enough gravity to do a good job of smoothing out impact damage. My first reaction to this photo was, "Sorry about the car, Dad."
Yes, Charon is a bit of a car wreck of a moon. He is a battered old man, or cat. With a red hat.

Ann

Why is Charon's Northern cap RED?
Sunburn

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by Ann » Fri Oct 02, 2015 4:42 pm

Donnageddon wrote:
Though the relief in that image is highly exaggerated.
That's true.
tmiller@d211.org wrote:
We need more cats
We certainly do!!! :kitty: But maybe Charon is Pluto's cat.
Bellerophon wrote:
Charon is another of those bodies that doesn't have enough gravity to do a good job of smoothing out impact damage. My first reaction to this photo was, "Sorry about the car, Dad."
Yes, Charon is a bit of a car wreck of a moon. He is a battered old man, or cat. With a red hat.

Ann

Re: APOD: Charon: Moon of Pluto (2015 Oct 02)

by MarkBour » Fri Oct 02, 2015 4:28 pm

The craters on Charon are much more clearly visible than on Pluto. Even on Charon, though, they appear to be considerably less numerous than the craters on our own Moon. Thanks, APOD, for this ongoing banquet of images from New Horizons ... keep them coming, I'm not too full yet.

Pluto a planet? I think the politicians should step in and give us a good legal definition. E.g. "Our solar system has 9 planets. These are the 9 objects in the system for which we have a planetary governor. The planetary governors meet each month in Las Vegas, NV and they each provide taxation/tribute to the Supremely Sovereign Systemic Liege, based on the population of their planets and a roll of the dice."

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