by neufer » Tue Oct 27, 2015 4:39 am
MarkBour wrote:
<<Both Nix and Hydra look like they could be typical comets or asteroids. They both look like they could easily be rocky bodies with some ice. If the inner planets were formed by conglomerations of such bodies, then there were lots of them that came into closer orbits of the Sun, as well as apparently many of them out in the Kuiper belt.>>
https://en.wikipedia.org/wiki/Kuiper_belt wrote:
<<The Kuiper belt is a region of the Solar System beyond the planets, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun. It is similar to the asteroid belt, but it is far larger—20 times as wide and 20 to 200 times as massive.
Like the asteroid belt, it consists mainly of small bodies, or remnants from the Solar System's formation. Although many asteroids are composed primarily of rock and metal, most Kuiper belt objects are composed largely of frozen volatiles (termed "ices"), such as methane, ammonia and water. Pluto is likely the largest and most-massive member of the Kuiper belt.
The Kuiper belt was initially thought to be the main repository for periodic comets, those with orbits lasting less than 200 years. However, studies since the mid-1990s have shown that the belt is dynamically stable, and that
[periodic] comets' true place of origin is the scattered disc, a dynamically active zone created by the outward motion of Neptune 4.5 billion years ago; scattered disc objects such as Eris have extremely eccentric orbits that take them as far as 100 AU from the Sun.>>
https://en.wikipedia.org/wiki/Hydra_%28moon%29#Name wrote:
<<The name Hydra was announced on 21 June 2006. The name is that of the Hydra, the nine-headed serpent that battled Hercules in Greek mythology. The nine heads of Hydra are a reference to Pluto's tenure as the ninth planet; its initial, H, refers to the Hubble Telescope, which discovered Hydra and, together with Nix, to the New Horizons mission whose safe passage was the motivation for taking the Hubble images.>>
https://en.wikipedia.org/wiki/Lernaean_Hydra wrote:
The Lernaean Hydra, more often known simply as the Hydra, was an
ancient serpentine water monster with reptilian traits. Its lair was the lake of Lerna in the Argolid. Lerna was reputed to be an entrance to the Underworld and the Hydra served as a guard.
According to Hesiod, the Hydra possessed many heads ("
more than the vase-painters could paint") and, each time one was lost, it was replaced by two more. It had poisonous breath and blood so virulent that even its scent was deadly.
Eurystheus sent Heracles to slay the Hydra, which Hera had raised just to slay Heracles. Upon reaching the swamp near Lake Lerna, where the Hydra dwelt, Heracles covered his mouth and nose with a cloth to protect himself from the poisonous fumes. He shot flaming arrows into the Hydra's lair, a deep cave from which it emerged only to terrorize neighboring villages. The chthonic creature's reaction to decapitation was botanical: two grew back, an expression of the hopelessness of such a struggle for any but the hero. The weakness of the Hydra was that it was invulnerable only if it retained at least one head.
Heracles called on his nephew Iolaus for help. Heracles cut off each head and Iolaus cauterized the open stumps. Seeing that Heracles was winning the struggle, Hera sent a
large crab to distract him. He crushed it under his mighty foot. The Hydra's one immortal head was cut off with a golden sword given to Heracles by Athena. Hera, upset that Heracles had slain the beast she raised to kill him, placed it in the dark blue vault of the sky as the constellation Hydra. She then turned the crab into the constellation Cancer.
When Eurystheus, the agent of Hera who was assigning The Twelve Labors to Heracles, found out that it was Heracles' nephew Iolaus who had handed Heracles the firebrand, he declared that the labor had not been completed alone and as a result did not count towards the 10 labors set for him. The mythic element is an equivocating attempt to resolve the submerged conflict between an ancient ten labors and a more recent twelve.>>
[quote="MarkBour"]
<<Both Nix and Hydra look like they could be typical comets or asteroids. They both look like they could easily be rocky bodies with some ice. If the inner planets were formed by conglomerations of such bodies, then there were lots of them that came into closer orbits of the Sun, as well as apparently many of them out in the Kuiper belt.>>[/quote][quote=" https://en.wikipedia.org/wiki/Kuiper_belt"]
<<The Kuiper belt is a region of the Solar System beyond the planets, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun. It is similar to the asteroid belt, but it is far larger—20 times as wide and 20 to 200 times as massive. [b][color=#FF00FF]Like the asteroid belt, it consists mainly of small bodies, or remnants from the Solar System's formation[/color]. [color=#FF0000]Although many asteroids are composed primarily of rock and metal[/color], [color=#0000FF]most Kuiper belt objects are composed largely of frozen volatiles (termed "ices"), such as methane, ammonia and water.[/color][/b] Pluto is likely the largest and most-massive member of the Kuiper belt.
The Kuiper belt was initially thought to be the main repository for periodic comets, those with orbits lasting less than 200 years. However, studies since the mid-1990s have shown that the belt is dynamically stable, and that [url=https://en.wikipedia.org/wiki/67P/Churyumov%E2%80%93Gerasimenko][periodic] comets[/url]' true place of origin is the scattered disc, a dynamically active zone created by the outward motion of Neptune 4.5 billion years ago; scattered disc objects such as Eris have extremely eccentric orbits that take them as far as 100 AU from the Sun.>>[/quote][quote=" https://en.wikipedia.org/wiki/Hydra_%28moon%29#Name"]
<<The name Hydra was announced on 21 June 2006. The name is that of the Hydra, the nine-headed serpent that battled Hercules in Greek mythology. The nine heads of Hydra are a reference to Pluto's tenure as the ninth planet; its initial, H, refers to the Hubble Telescope, which discovered Hydra and, together with Nix, to the New Horizons mission whose safe passage was the motivation for taking the Hubble images.>>[/quote][quote=" https://en.wikipedia.org/wiki/Lernaean_Hydra"]
The Lernaean Hydra, more often known simply as the Hydra, was an [url=http://asterisk.apod.com/viewtopic.php?f=9&t=35278&p=249402&hilit=serpentine#p249383]ancient serpentine water monster[/url] with reptilian traits. Its lair was the lake of Lerna in the Argolid. Lerna was reputed to be an entrance to the Underworld and the Hydra served as a guard.
According to Hesiod, the Hydra possessed many heads ("[url=https://upload.wikimedia.org/wikipedia/commons/b/be/Lernaean_Hydra_Getty_Villa_83.AE.346.jpg]more than the vase-painters could paint[/url]") and, each time one was lost, it was replaced by two more. It had poisonous breath and blood so virulent that even its scent was deadly.
Eurystheus sent Heracles to slay the Hydra, which Hera had raised just to slay Heracles. Upon reaching the swamp near Lake Lerna, where the Hydra dwelt, Heracles covered his mouth and nose with a cloth to protect himself from the poisonous fumes. He shot flaming arrows into the Hydra's lair, a deep cave from which it emerged only to terrorize neighboring villages. The chthonic creature's reaction to decapitation was botanical: two grew back, an expression of the hopelessness of such a struggle for any but the hero. The weakness of the Hydra was that it was invulnerable only if it retained at least one head.
Heracles called on his nephew Iolaus for help. Heracles cut off each head and Iolaus cauterized the open stumps. Seeing that Heracles was winning the struggle, Hera sent a [url=https://en.wikipedia.org/wiki/Mr._Krabs]large crab[/url] to distract him. He crushed it under his mighty foot. The Hydra's one immortal head was cut off with a golden sword given to Heracles by Athena. Hera, upset that Heracles had slain the beast she raised to kill him, placed it in the dark blue vault of the sky as the constellation Hydra. She then turned the crab into the constellation Cancer.
When Eurystheus, the agent of Hera who was assigning The Twelve Labors to Heracles, found out that it was Heracles' nephew Iolaus who had handed Heracles the firebrand, he declared that the labor had not been completed alone and as a result did not count towards the 10 labors set for him. The mythic element is an equivocating attempt to resolve the submerged conflict between an ancient ten labors and a more recent twelve.>>[/quote]