HYDRA
Hydra, the Water Serpent, begins its winding way from upper right toward lower left. The longest of constellations, Hydra wraps around a quarter of the sky. Here we see the western two-thirds, the remainder diving south of Virgo.
Hydra
Transit Date of principal star:
15 February
Like a number of other constellations, the Hydra concerns the story of Heracles' labours. This time it is the Second Labour of Heracles.
Hydra
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Hydra is a constellation in the southern hemisphere. It is the largest constellation in the sky.
Hydra
Los enlaces en color anaranjado lo llevan a páginas en Inglés aún no traducidas al Español.
Constelación Hydra, la Serpiente Marina.
Haz "click" en la imagen para una vista completa ...
Hydra represent the multiheaded serpent killed by Hercules. The association between those two constellations predates Hercules, however, and came from Mesopotamia.
Hydra
Abbreviation: Hya
Genitive: Hydrae
Translation: The Water Serpent
Sky Chart
Peoria Astronomical Society Hydra Page
Interactive star chart (Java applet) ...
Hydra (constellation): Encyclopedia BETA
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Hydra, the sea serpent:
Hydra is the largest and the longest constellation in the night sky. The stars that make up Hydra represent the sea serpent that Hercules was forced to defeat as one of his Twelve Labors.
Hydra
Abbreviation: Hya English name: Sea Serpent Coordinates see Stellar data
Particulars: ...
Hydra is the largest of the 88 modern constellations at over 1,300 square degrees, extending over 100° of sky. Despite its enormous size, it is hard to identify because the stars are so faint.
Hydra is the largest of the 88 constellations, winding a quarter of the way around the sky. Its head is south of the constellation Cancer, the Crab, while the tip of its tail lies between Libra, the Scales, and Centaurus, the Centaur.
Alphard (Alpha Hydrae)
Map © 2003 Torsten Bronger
The brightest star in the constellation Hydra, made more noticeable by being in a fairly barren region of sky to the southwest of Regulus. Its Arabic name means "the solitary one." ...
Hydrate is a term used in inorganic chemistry and organic chemistry to indicate that a substance contains water.
hydrazine
a colorless liquid which burns rapidly and is used as a common rocket and missile fuel
hydrogen ...
HYDRATION - Reaction of a substance with water.
HYDROCARBON - Organic compound containing only carbon and hydrogen.
HYDRODYNAMICS - Study of fluid in motion ...
Hydra (Sea Serpent)
Bronze Saint Ichi
Origin of the constellation: Ancient Greece (Ptolemaeus) ...
Hydra is a very weird constellation. It is the largest constellation on the sky (with Virgo close behind), but is strung out from Libra to Canis Minor along the southern horizon over about 90 degrees.
Hydra(water serpent), Hydrus(lesser water snake), Indus(indian), Lacerta(lizard), Leo(lion), Leo Minor(lesser lion), Lepus(hare/rabbit), Libra(the scales), Lupus(wolf), lynx, Lyra(lyre), Mensa(the table mountain), ...
hydrazine monopropellant thruster using a helium pressurant
Stabilization
Craft spins once every 37.5 sec ...
Hydraulic action takes place when air in a joint is suddenly compressed by a wave closing the entrance of the joint. This then cracks it. Wave pounding is when the sheer energy of the wave hitting the cliff or rock breaks pieces off.
The hydrazine tank can be seen mid-right on the illustration below, which shows the entire Cassini Propulsion Module Subsystem. The four hydrazine Thruster Clusters (4 thrusters on each) are also visible.
This hydraulic jack lifitng process is done at constant speed. If the two pistons are at different levels, as they usually are in real jacks used for lifting, there's a pressure difference between the two pistons due to height difference (rho)gh.
Nix and Hydra are very close to a 1:4:6 orbital resonance with the Charon-Pluto orbital period: Nix is within 2.7% of resonance, while Hydra is within 0.3%, though neither are in an exact resonance.
Charon
Nix
Hydra
If you notice that I have missed off any moons, please inform me.
The constellation Hydra contains a globular cluster of stars known as M68. This cluster is around 140 light-years in diameter and is located about 40,000 light-years from Earth.
carbonaceous chondrites (NASA Thesaurus) A group name for friable, dull-black, chondritic stoney meteorites, characterized by the presence of hydrated clay type silicate minerals, ...
One that passed through the Gamma Hydra system in 2267. This comet was unusual and produced radiation that caused extremely rapid aging in humanoids.
Some C-class asteroids are known to have hydrated minerals on their surfaces, whereas Ceres (a G-class) probably has water present as a layer of permafrost.
Alphard Alpha Hydrae
Alphecca Alpha Coronae Borealis
Alpheratz Alpha Andromedae
Alrai Gamma Cephei
Alrakis Mu Draconis
Alrami Alpha Sagittarii
Alrischa Alpha Piscium
Alruccabah Alpha Ursae Minoris
Alsafi Sigma Draconis
Alsciaukat 31 Lyncis ...
13 central or zodiacal: - Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, Pisces and the Pleiades; and 12 southern: - Orion, Canis, Lepus, Argo, Cetus, Eridanus, Piscis australis, Ara, Centaurus, Hydra, ...
The main 596 N thruster wil use hydrazine and N2O4 propellant. Control is through 12 4.45 N hydrazine thrusters, mounted in four groups of three (two aft facing and one roll control thruster). The initial propellant load was 216.
There are two ancient Greek myths involving Constellation Hydra. One involved an enormous water snake with nine heads that was killed by Hercules with the help of the Goddess Athena.
Both Voyagers have plenty of hydrazine fuel -- Voyager 1 is expected to have enough propellant until 2040 and Voyager 2 until 2034. The limiting factor is the RTGs (radio-isotope thermal generators).
I'll also show you some less well-known constellations - HYDRA, the Water Snake, SEXTANS, the Sextant, CRATER, the Cup, and CORVUS, the Crow.
Star Physics (Check the study guide for this lesson) ...
Pluto and its moons Charon, Hydra and Nix.
Scientists have a solid understanding of how planets are formed, but it the actual ingredients and conditions that resulted in the creation of our solar system remain unclear.
The new data will also enable scientists to link their observations with hydrated minerals found in meteorites, some of which share similar characteristics to that of ocean water, ...
Then last year, two small moons, Nix and Hydra11, were unexpectedly found in Hubble images.
Earth rocks may contain water bound chemically ("water of hydration"), but not these. Water, of course, would be essential to any human outpost on the Moon.
While Hercules was busy fighting the multi-headed monster, Hydra, the goddess Hera, who did not like Hercules, sent the Crab to distract him.
Other names for this star are Alfard, Alphart, Kalbelaphard, or Cor Hydrae. The last of these names is Latin meaning "The Hydra's Heart." This was the designation of this star first introduced by the great sixteenth century astronomer Tycho Brahe.
"Hydraulics and electronics really fascinated me." Hydraulic systems are the secret behind car brakes, elevators and large machines such as bulldozers and cranes. These systems use a liquid to transfer force from one point to the other.
A wide, dense disk of gas and dust surrounds the newborn star TW Hydrae in this artist's concept. Material in the disk may be coalescing to form planets and smaller bodies.
Hg is the modern chemical symbol for mercury. It comes from hydrargyrum, a Latinized form of the Greek word "hydrargyros", which is a compound word meaning 'water' and 'silver' - since it is liquid, like water, and yet has a silvery metallic sheen.
Hubble Space Telescope image of the first plutoid, Pluto, and its moons Charon, Hydra and Nix
Credit: NASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the HST Pluto Companion Search Team ...
The flash probably resulted from the ignition of the remaining hydrazine fuel. © Canada-France-Hawaii Telescope Corporation Observatories in the western hemisphere (North America, South America and the Pacific) were well placed to see the impact.
One such candidate is NGC 3312 in the Hydra I cluster (Abell 1060). As noted by Gallagher 1978 (ApJ 223, 386), this giant spiral shows diffuse matter that appears to be streaming away from part of the disk, ...
Barring any serious spacecraft subsystem failures, the Voyagers may survive until the early twenty-first century, when diminishing power and hydrazine levels will prevent further operation.
Pluto's three moons are called Charon, Nix, and Hydra..
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Go to Imagine the Universe! (A site for ages 14 and up.) ...
4087 kg of monomethyl hydrazine in each pod (pods can be cross-linked)
Mixture Ratio
1.65:1 ...
The smallest is Crux (The Southern Cross) and the largest is Hydra (The Watersnake). The most common concept of a constellation is generally the pattern of stars (usually the brightest ones) that make up a familiar figure or pattern.
This element was known in antiquity. In Latin it was called hydragyrum (liquid silver).
Ionization energies
HgI 10.4 eV, HgII 18.8 eV, HgIII 34.2 eV.
Hubble Space Telescope image of Pluto (largest), Charon (down and to the right), and further to the right the other two satellites, Nix and Hydra, left and right respectively. Image credit: NASA, ESA, H. Weaver (JHU/APL), A.
It was the first trans-Neptunian object discovered and is one of the largest. It has three companions: Charon (discovered in 1978 by J. Christy) and Hydra and Nix (discovered in 2005 by the Hubble Space Telescope Pluto Companion Search Team).
The constellation with the greatest number of visible stars in it is Centaurus (the Centaur - with 101 stars). The largest constellation is Hydra (The Water Snake) which extends over 3.158% of the sky.
It is located along the ecliptic between Leo and Libra. Virgo is seen along the . The brightest star in Virgo is Spica (meaning "ear of wheat"). Virgo is the second-largest constellation (of the 88 constellations), after Hydra.
Its path around the sun is so big that it takes 248 earth years to make one orbit of the sun. Pluto is the smallest planet. Pluto's satellite is called Charon. Two smaller moons named Nix and Hydra wPluto no longer a planet! ...
Extremely dark in color, probably because of their hydrocarbon content, they show evidence of having adsorbed water of hydration. Thus, unlike the earth and the moon, they have never either melted or been reheated since they first formed.
Given that the zodiac extends eight degrees north and south of the ecliptic, an additional twelve constellations reside in part within the zodiac's belt of stars: Auriga, Canis Minor, Cetus, Corvus, Crater, Hydra, Ophiuchus, Orion, Pegasus, Scutum, ...
The exposed rock named Ruiz Garcia showed signatures of hydrated mineral deposits located at southeast portion of Santa Maria crater. Credit: NASA/JPL/Cornell Marco Di Lorenzo, Kenneth Kremer
3 D image collection below ...
Terlevich, and Gary Wegner claim that a large group of galaxies within about 200 million light years of the Milky Way are moving together towards the "Great Attractor in the direction of the Hydra and Centaurus, ...
 See also: Earth, Light, Star, Second, Time
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