Saturn's Hyperion: A Moon with Odd Craters (2009 Jan 18)
- hughhyatt
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Saturn's Hyperion: A Moon with Odd Craters (2009 Jan 18)
Am I imagining it, or under most of the odd looking craters in this photo are there the remains of a huge crater covering something like two-thirds of Hyperion's visible surface?
O Star-eyed Science! hast thou wandered there, To waft us home the message of despair? — Thomas Campbell
- orin stepanek
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Re: Saturn's Hyperion: A Moon with Odd Craters
Link! http://apod.nasa.gov/apod/ap090118.html
I think what were seeing is a captured comet. I believe that the cone shaped craters are vents fanned out in a circular pattern.
Orin
I think what were seeing is a captured comet. I believe that the cone shaped craters are vents fanned out in a circular pattern.
![Confused :?](./images/smilies/icon_confused.gif)
Orin
Orin
Smile today; tomorrow's another day!
Smile today; tomorrow's another day!
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
Sounds good to me(; science is often = speculation).orin stepanek wrote:Link! http://apod.nasa.gov/apod/ap090118.html
I think what were seeing is a captured comet. I believe that the cone shaped craters are vents fanned out in a circular pattern.![]()
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Saturn's Hyperion: A Moon with Odd Craters (2009 January 18)
http://apod.nasa.gov/apod/ap090118.html
![Image](http://www.dsng.net/images/spongebob.jpg)
HAMLET: Look here, upon this picture, and on this,
. The counterfeit presentment of two brothers.
. See, what a grace was seated on this brow;
. Hyperion's curls; the front of Jove himself;
. An eye like Mars, to threaten and command;
. A station like the herald Mercury
. New-lighted on a heaven-kissing hill;
<<Barack Obama tells TV Guide that his favorite TV character of all time is
"SpongeBob SquarePants, because SpongeBob is the show I watch with my daughters.">>
Art Neuendorffer
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
. The Winter's Tale > Act IV, scene IVapodman wrote:Another theory ...
.
AUTOLYCUS: He has a son, who shall be flayed alive; then
. 'nointed over with honey, set on the head of a
. wasp's nest; then stand till he be three quarters
. and a dram dead; then recovered again with
. aqua-vitae or some other hot infusion; then, raw as
. he is, and in the hottest day prognostication
. proclaims, shall be be set against a brick-wall, the
. sun looking with a southward eye upon him, where he
. is to behold him with flies blown to death.
Art Neuendorffer
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Re: Saturn's Hyperion: A Moon with Odd Craters
Hello All,
The captured comet idea is intriguing and I agree with it. For comet study nothing like having a captured audience for a laboratory, at least one wouldn't have to go a million miles as hour to hop on. Or would one?
It appears as if a "land" slide of sorts (for want of a better description) has occurred or a collapse of the large central area. It looks like it separated as a large layer and slid (fell?) radially into a pocket. Solar heating could be the trigger but, in any regard, the smoother areas around the edge appear to be newer exposed material mostly because of texture and color. Also the radial grooves around the perimeter could be a clue as well. Dirty snowball? The sharp edges around each crater could be a process of melting.hughhyatt wrote:Am I imagining it, or under most of the odd looking craters in this photo are there the remains of a huge crater covering something like two-thirds of Hyperion's visible surface?
The captured comet idea is intriguing and I agree with it. For comet study nothing like having a captured audience for a laboratory, at least one wouldn't have to go a million miles as hour to hop on. Or would one?
"Everything matters.....So may the facts be with you"-astrolabe
- orin stepanek
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Re: Saturn's Hyperion: A Moon with Odd Craters
Beware the wasps from outer space!
![Wink :wink:](./images/smilies/icon_wink.gif)
Orin
Orin
Smile today; tomorrow's another day!
Smile today; tomorrow's another day!
Re: Saturn's Hyperion: A Moon with Odd Craters
APOD: 2007 January 28 - Saturn's Hyperion: A Moon with Odd Craters
Asterisk*: Hyperion; Destroyed Moon? (APOD 27 Jan 2007)
APOD: 2005 October 3 - Saturns Hyperion: A Moon with Odd Craters
Asterisk*: APOD Oct.03, 2005 Hyperion
APOD: 2005 July 26 - Hyperion: Sponge Moon of Saturn
Asterisk*: Hyperion
Asterisk*: July 26 pic of Saturn moon
Asterisk*: Hyperion; Destroyed Moon? (APOD 27 Jan 2007)
APOD: 2005 October 3 - Saturns Hyperion: A Moon with Odd Craters
Asterisk*: APOD Oct.03, 2005 Hyperion
APOD: 2005 July 26 - Hyperion: Sponge Moon of Saturn
Asterisk*: Hyperion
Asterisk*: July 26 pic of Saturn moon
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
OTOH, we've never seen a cometary nucleus quite like Hyperion.astrolabe wrote:It appears as if a "land" slide of sorts (for want of a better description) has occurred or a collapse of the large central area. It looks like it separated as a large layer and slid (fell?) radially into a pocket. Solar heating could be the trigger but, in any regard, the smoother areas around the edge appear to be newer exposed material mostly because of texture and color. Also the radial grooves around the perimeter could be a clue as well. Dirty snowball? The sharp edges around each crater could be a process of melting.hughhyatt wrote:Am I imagining it, or under most of the odd looking craters in this photo are there the remains of a huge crater covering something like two-thirds of Hyperion's visible surface?
The captured comet idea is intriguing and I agree with it. For comet study nothing like having a captured audience for a laboratory, at least one wouldn't have to go a million miles as hour to hop on. Or would one?
-----------------------------------------------------http://en.wikipedia.org/wiki/Hyperion_(moon)
<<Hyperion is one of the largest highly irregular (non-spherical) bodies in the solar system (second to [Neptune's] Proteus). The largest crater on Hyperion is approximately 121.57 km in diameter and 10.2 km deep. A possible explanation for the irregular morphology is that Hyperion is a fragment of a larger body that was broken by a large impact in the distant past, an event which has been linked to the enigmatic darkening of Iapetus.
Hyperion is the only known moon in the solar system that rotates chaotically, but simulations suggest that other irregular satellites may have done so in the past. It is unique among the large moons in that it is very irregularly shaped, has a fairly eccentric orbit, and is near another large moon, Titan. These factors combine to restrict the set of conditions under which a stable rotation is possible. The 3:4 orbital resonance between Titan and Hyperion may also make a chaotic rotation more likely. The odd rotation probably accounts for the relative uniformity of Hyperion's surface, in contrast to many of Saturn's other moons which have contrastive trailing and leading hemispheres.>>
HAMLET: Let me see. [Takes the skull]
![Image](http://upload.wikimedia.org/wikipedia/en/0/0a/Proteus_map_%28Stooke%29.jpg)
. Alas, poor Yorick! I knew him, Horatio: a fellow
. of infinite jest, of most excellent fancy: he hath
. borne me on his back a thousand times; and now,
. how abhorred in my imagination it is!
Art Neuendorffer
- orin stepanek
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Re: Saturn's Hyperion: A Moon with Odd Craters
Hi bystander! I did remember the old posts. It is a fun topic to discuss because of its odd shape.bystander wrote:APOD: 2007 January 28 - Saturn's Hyperion: A Moon with Odd Craters
Asterisk*: Hyperion; Destroyed Moon? (APOD 27 Jan 2007)
APOD: 2005 October 3 - Saturns Hyperion: A Moon with Odd Craters
Asterisk*: APOD Oct.03, 2005 Hyperion
APOD: 2005 July 26 - Hyperion: Sponge Moon of Saturn
Asterisk*: Hyperion
Asterisk*: July 26 pic of Saturn moon
Orin
Orin
Smile today; tomorrow's another day!
Smile today; tomorrow's another day!
Re: Saturn's Hyperion: A Moon with Odd Craters
Those space wasps would be huge!!!!! Worse than Jumanji.
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
rigelan wrote:Those space wasps would be huge!!!!! Worse than Jumanji.
![Image](http://upload.wikimedia.org/wikipedia/en/c/c4/Alien_%281979%29_-_The_Alien.jpg)
Say, its only a paper moon
Sailing over a cardboard sea
But it wouldn't be make-believe
If you believed in me
Yes, it's only a canvas sky
Hanging over a muslin tree
But it wouldn't be make-believe
If you believed in me
-------------------------------------------------
'Alien' Wasp Kills Whole Forests
Scientists Warn Now that Wasp Is Here and Poses Huge Risk to Pine Trees
ABC News, March 8, 2006 --
<<An invader has entered the United States and it could devastate pine trees across the country, especially throughout the lush forests of the Southeast.
![Image](http://a.abcnews.com/images/Health/ht_wasp_060307_sp.jpg)
The wood wasp -- Sirex noctilio Fabricius -- has wiped out huge stands of trees in the Southern Hemisphere, killing 80 percent of the trees in affected forests in New Zealand, Australia, South America and South Africa. Scientists have dreaded the day when the alien wasp might make its way into the United States, but the wait is now over. It ended last year when Richard Hoebeke, an expert taxonomist at Cornell University, opened an insect trap in New York State. Inside the trap he identified the first Sirex woodwasp ever found in the wild in the United States. Since that discovery, entomologists have scattered out across New York, finding wasps over a wide area. And farther north, Canadian officials have found the wasp there, raising questions about just how widespread it already is. It's already too late to eradicate the wasp, Hoebeke says. "We are looking at long-term management and control," he says. "We've found the wasp in too many places."
Once the wasp penetrates a tree to lay eggs and produce the next generation, the tree begins to die. Not because of the wasps, or the resulting larvae, but because of a symbiotic fungus that the female wasp also introduces into the bark of the tree to provide food for the larvae to survive. The fungus attacks the tree, and it can kill it in less than a year. Government officials and the North American Plant Protection Organization recently issued dire warnings about the danger. The wasp likes all sorts of conifers, but it has a particular taste for pines. Death comes fairly quickly to the trees, although that may not be obvious at the time.
"When the wasp attacks a tree, the tree within that season will start to die," Hoebeke says. "You'll start seeing wilting of some of the upper branches, discoloration and yellowing, and eventually death." Beads of resin will trickle down the trunk from the tiny hole left for the exodus of the adult wasp, but that's about all.
Authorities think the wasp arrived in this country in wooden packing crates, or pallets, since that's precisely the kind of wood the wasp prefers. The larvae can live in the harvested wood, which is usually untreated, for more than a year, and that's plenty of time for the wood to be fabricated into containers and shipped into the United States. Hoebeke says he wasn't all that surprised when he found the first wasp. Considering the amount of cargo that moves into this country every day, much of it packaged in wood, it was only a matter of time.
So now it's here, but what can be done about it? There is some hope that the critter can be managed and kept to a tolerable level. Authorities in the southern hemisphere, particularly in New Zealand and Australia, have had considerable success using a natural bio-control agent. A particular parasitic worm, a nematode, has turned out to be a pretty good match for the wasp. The nematode is introduced into the forest, and it gets into the larvae of the wood wasp, leaving the eggs infertile. It's a tidy system in which the adult wasps pick up the nematodes and distribute them along with their larvae, forming sort of a search and destroy network. "In the Southern Hemisphere it has been a silver bullet," Hoebeke says. "It has kept the wasp population under control." That's a dramatic change from just a few years ago, when the wasp was destroying trees by the thousands.
But would the same strategy work here? Experts think it's promising, but the situation here is much more complex than it was to the south. Our forests are more diversified, as well as our wasp population, and no one wants to wipe out all wasps. After all, they eat many other harmful insects, and they provide food for a wide range of animals. There's always the concern that introducing a "bio-control agent," even a tiny nematode, could backfire. But at this point that's about the only thing that looks promising.
Hopefully, Hoebeke says, it's not already too late. The forests in this country are already under attack by beetles, fungus and all sorts of burrowing animals. In Alaska, for example, it is possible to drive for miles through dead spruce trees, killed by beetles that move across the landscape like an invisible plague. "We didn't need another invader," says Hoebeke.
But Sirex noctilio Fabricicus is here, none the less.>>
-----------------------------------
Art Neuendorffer
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Re: Saturn's Hyperion: A Moon with Odd Craters
I don't think the moon wasps are wasps .. I think they're sweet little honeybees with stingers about 10 feet long.
Duty done .. the rain will stop as promised with the rainbow.
"Abandon the Consensus for Individual Thought"
"Abandon the Consensus for Individual Thought"
Re: Saturn's Hyperion: A Moon with Odd Craters
How about a neutron star remnant with an embedded core?
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Re: Saturn's Hyperion: A Moon with Odd Craters
http://simpsons.wikia.com/wiki/Bumblebee_Manaristarchusinexile wrote:I don't think the moon wasps are wasps ..
I think they're sweet little honeybees with stingers about 10 feet long.
“¡Ay, ay, ay, no me gusta!”
“¡Ay, ay, ay, no es bueno!”
“¡Ay, Dios no me ama!”
Art Neuendorffer
Re: Saturn's Hyperion: A Moon with Odd Craters
If Hyperion was a neutron star, wouldn't Saturn be orbiting it? Now that would be strange.Frenchy wrote:How about a neutron star remnant with an embedded core?
To answer your question, Hyperion is low density and porous, not attributes of neutron stars.
Re: Saturn's Hyperion: A Moon with Odd Craters
Speaking of density...I have a several questions.
How do they determine the density of the gas giants? Do they use just the volume of the planet, or the volume of the planets and their ring systems when making these calculations?
Can Saturn to have a bouyant shockwave that gives it a lower density than the other gas giants?
Lastly, is it possible to trace the outgassed material from Hyperion's surface?
How do they determine the density of the gas giants? Do they use just the volume of the planet, or the volume of the planets and their ring systems when making these calculations?
Can Saturn to have a bouyant shockwave that gives it a lower density than the other gas giants?
Lastly, is it possible to trace the outgassed material from Hyperion's surface?
Re: Saturn's Hyperion: A Moon with Odd Craters
I would expect that only the volume of the planet is used in calculating density as the ring system is not part of the planet proper.Frenchy wrote:Speaking of density...I have a several questions.
How do they determine the density of the gas giants? Do they use just the volume of the planet, or the volume of the planets and their ring systems when making these calculations?
Can Saturn to have a bouyant shockwave that gives it a lower density than the other gas giants?
Lastly, is it possible to trace the outgassed material from Hyperion's surface?
I'm not sure what you mean bouyant shockwave, but Saturn is indeed the least dense of the gas giants.
If Hyperion is a captured cometary core, it was probably long dead before its capture. It was also probably captured long before there was sentient life on earth. Time alone would probably rule out the possibility of tracing the outgassed material.
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
The period of any satellite (in minutes) determines the average density (in g/cm³)Frenchy wrote:How do they determine the density of the gas giants?
Do they use just the volume of the planet, or the volume of the planets and their ring systems when making these calculations?
in an imaginary spherical volume within that satellite's orbit:
...........................................................
Average Density = { [197 min./Orbital Period]^2 } g/cm³
--------------------------------------------------------------
The relative volume of the planet to the volume of the
imaginary sphere within that satellite orbit then scales up
this Average Density to determine the planet's actual density.
--------------------------------------------------------------
Density = { [197 min./Orbital Period]^2 } x { (semimajor axis)^3 / [(Polar radius)x(Equatorial radius)^2] } g/cm³
or Density = 5.5 g/cm³ x { [84 min./Period]^2 } x { (semimajor axis)^3 / [(Polar radius)x(Equatorial radius)^2] }
-------------------------------
Use Io's period to determine Jupiter's density:
...........................................
Io Period = 1.77 days = 2550 minutes
Io semimajor axis = 422,000 km.
Jupiter Polar radius = 67,000 km.
Jupiter Equatorial radius =71,500 km.
...........................................
Jupiter Density = 5.5 g/cm³ x { [84/2550]^2 } x { (422)^3 / [(67)x(71.5)^2] }
Jupiter Density = 5.5 g/cm³ x {.0011} x {219}
Jupiter Density = 1.32 g/cm³
-------------------------------
Use Titan's period to determine Saturn's density:
...........................................
Titan Orbital period = 15 days 22 hours = 22,900 minutes
Titan Semi-major axis 1,222,000 km.
Saturn Polar radius 54,400 km.
Saturn Equatorial radius 60,200 km.
...........................................
Saturn Density = 5.5 g/cm³ x { [84/23,000]^2 } x { (1222)^3 / [(54.4)x(60.2)^2] }
Saturn Density = 5.5 g/cm³ x {.0000135} x {9260}
Saturn Density = 0.69 g/cm³
--------------------------------------------------------------
Sun's galactic rotation period: 220 million years
...........................................
Milky Way Average Spherical Density ~ { [197 min./220 million years]^2 } g/cm³
Milky Way Average Spherical Density ~ 2.9 x 10^-24 g/cm³
Milky Way Average Spherical Density ~ 1 Sun every 11.5 lightyears
-------------------------------
Last edited by neufer on Fri Jan 23, 2009 3:32 am, edited 1 time in total.
Art Neuendorffer
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Re: Saturn's Hyperion: A Moon with Odd Craters
Actually I have it on good authority that Hyperion was a nuclear test site used by a society now long gone. Hyperion was originally a satellite used for such tests. Eventually it became so radioactive that it had to be moved to it's present site. It is not certain whether any of the society responsible survived, or where they were. We have a similar site at
Latitude: 37deg, 3min, 36.84sec North; 116deg, 1min, 20.92 sec West.
Latitude: 37deg, 3min, 36.84sec North; 116deg, 1min, 20.92 sec West.
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
http://en.wikipedia.org/wiki/Bikini_Atollhadashinogen wrote:Actually I have it on good authority that Hyperion was a nuclear test site used by a society now long gone. Hyperion was originally a satellite used for such tests. Eventually it became so radioactive that it had to be moved to it's present site. It is not certain whether any of the society responsible survived, or where they were.
<<Bikini Atoll (also known as Pikinni Atoll) is part of Republic of the Marshall Islands. It consists of 36 islands surrounding a 594.1 km2 lagoon. Bikini comes from Marshallese "Pik" meaning "surface" and "Ni" meaning "coconut." Between 1946 and 1958, twenty-three nuclear devices were detonated at Bikini Atoll.
The March 1st, 1954 detonation codenamed Castle Bravo, was the first test of a practical hydrogen bomb. The largest nuclear explosion ever set off by the United States, it was much more powerful than predicted, and created widespread radioactive contamination. Among those contaminated were the 23 crewmembers of the Japanese fishing boat Lucky Dragon 5. The ensuing scandal in Japan was enormous, and ended up inspiring the 1954 film Godzilla, in which the 1954 U.S. nuclear test awakens and mutates the monster, who then attacks Japan before finally being vanquished by Japanese ingenuity.----------------------------------------------
. The Cocoanuts (1929)
.
Hammer (Groucho Marx): I can see it now:
. you and the moon - wear a necktie so I'll know you.
----------------------------------------------
The Micronesian inhabitants, who numbered about 200 before the United States relocated them after World War II, ate fish, shellfish, bananas, and coconuts. A large majority of the Bikinians were moved to a single island named Kili as part of their temporary homestead, but remain until today and receive compensation from the United States for their survival. In 1968 the United States declared Bikini habitable and started bringing a small group of Bikinians back to their homes in the early 1970s as a test. In 1978, however, the islanders were removed again when strontium-90 in their bodies reached dangerous levels after a French team of scientists did additional tests on the island. It was not uncommon for women to experience faulty pregnancies, miscarriages, stillbirths and damage to their offspring as a result of the nuclear testing on Bikini. The United States provided $150 million as a settlement for damages caused by the nuclear testing program.
Prior to the explosion of the first atomic bomb on the island, the lagoon at Bikini was designated as a ship graveyard during World War II by the US. Today the Bikini Lagoon is still home to a large number of vessels from the United States and other countries. The dangers of the radioactivity and limited services in the area led to divers staying away from one of the most remarkable potential diving sites in the Pacific for many years. Today a limited number of divers head for the lagoon at Bikini every year for an extensive tour of World War II naval vessels. The dive spot has become popular among divers in the last 10 years. The lagoon contains a larger amount of sea life than usual due to the lack of fishing, including sharks, increasing the fascination with the spot as a diver's adventure spot.
The special IAEA Bikini Advisory Group determined in 1997 that "It is safe to walk on all of the islands ... although the residual radioactivity on islands in Bikini Atoll is still higher than on other atolls in the Marshall islands, it is not hazardous to health at the levels measured ... The main radiation risk would be from the food: eating locally grown produce, such as fruit, could add significant radioactivity to the body...Eating coconuts or breadfruit from Bikini Island occasionally would be no cause for concern. But eating many over a long period of time without having taken remedial measures might result in radiation doses higher than internationally agreed safety levels."
It is because of these food risks that the group eventually did not recommend fully resettling the island.>>
----------------------------------------------
Art Neuendorffer
Re: Saturn's Hyperion: A Moon with Odd Craters
Somebody wake up and smell the coffee! The proximity of Hyperion to Saturn and rings is close enough to generate an incredible static charge. Aren’t their any humanoids out there than can pull this therum together? This magnetic charge is creating an anti-gravitational erosion affect. In essence this moon with magnetic core of iron (solid or pieced), perhaps remnants of the chunk left by the last major impact which would have cleaned the slate (surface) at the time of impact anyway is interacting with Saturn's magnetosphere - ya like a generator. To over simplify; remember playing with magnets/motors and iron filings in 2nd grade. Wasp nest? Get off the crack. Captured comet? It would still be "burning" - that would look cool - but it's not! KISS
Re: Saturn's Hyperion: A Moon with Odd Craters
Contribute after you achieve a degree of literacy.Troythius wrote:therum
It was a joke. You're not going to make many friends with insults on your FIRST POST, junior.Troythius wrote:Wasp nest? Get off the crack.
This should be a joke, but it looks like you are serious. Why don't you study science?Troythius wrote:incredible static charge
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Re: Saturn's Hyperion: A Moon with Odd Craters
Neufer, how canst thou knoweth so mucheth of so many different thingseth!?neufer wrote:http://simpsons.wikia.com/wiki/Bumblebee_Manaristarchusinexile wrote:I don't think the moon wasps are wasps ..
I think they're sweet little honeybees with stingers about 10 feet long.
“¡Ay, ay, ay, no me gusta!”
“¡Ay, ay, ay, no es bueno!”
“¡Ay, Dios no me ama!”
Duty done .. the rain will stop as promised with the rainbow.
"Abandon the Consensus for Individual Thought"
"Abandon the Consensus for Individual Thought"
- neufer
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Re: Saturn's Hyperion: A Moon with Odd Craters
Being old with internet access helps a lot.aristarchusinexile wrote:Neufer, how canst thou knoweth so mucheth of so many different thingseth!?
But simply knowing does not not always equate with understanding.
Art Neuendorffer