Europa (mond)

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Europa ist der zweitinnerste Mond des Planeten Jupiter. Sie ist mit einem Durchmesser von km der kleinste der vier großen Jupitermonde und der sechstgrößte Mond im Sonnensystem. Europa ist ein Eismond. Europa (auch Jupiter II) ist der zweitinnerste Mond des Planeten Jupiter. Sie ist mit einem Durchmesser von km der kleinste der vier großen Jupitermonde​. E U R O P A. Der zweite der Galileischen Monde (zu deren Entdeckungsgeschichte und Einordnung im. Jupitersystem -> Ganymed) wurde wie die meisten. Der Jupitermond Europa hat während eines Vorbeiflugs der Zerfurchte Oberfläche: Europa ist der viertgrößte Mond des Jupiters und von. Jupitermond Europa. Verfasst von Denise. Veröffentlicht in Jupitermonde. Daten und Fakten. Europa. Steckbrief Europa. Durchmesser:

europa (mond)

Der Jupitermond Europa hat während eines Vorbeiflugs der Zerfurchte Oberfläche: Europa ist der viertgrößte Mond des Jupiters und von. Der Jupitermond Europa besitzt unter seinem Eispanzer möglicherweise einen lebensfreundlichen Ozean, heißt es. Eine Landemission könnte. Der sechstgrößte Mond im Sonnensystem, Europa, gilt als vielversprechender Kandidat für die Suche nach außerirdischem Leben. Unter den.

Europa (mond) Video

Europa (Mond)

In the two Voyager spacecraft passed through the Jovian system, providing the first hints that Europa might contain liquid water.

The team measured the vapor using a spectrograph at the Keck Observatory in Hawaii that measures the chemical composition of planetary atmospheres through the infrared light they emit or absorb.

As the ice shell distorts and flexes from tidal forces, warmer and less-dense ice would rise, carrying the ocean samples to the surface where a spacecraft could analyze it remotely, using infrared and ultraviolet instruments, among others.

A 3D model of Jupiter's moon Europa, an icy moon with a hidden subsurface ocean. Potential for Life. Life as we know it seems to have three main requirements: liquid water, the appropriate chemical elements, and an energy source.

Astrobiologists — scientists who study the origin, evolution and future of life in the universe — believe Europa has abundant water and the right chemical elements, but an energy source on Europa has been difficult to confirm.

On Earth, life forms have been found thriving near subterranean volcanoes, deep-sea vents and other extreme environments.

If we eventually find some form of life at Europa or Mars or Enceladus for that matter , it may look like microbes, or maybe something more complex.

If it can be demonstrated that life formed independently in two places around the same star, it would then be reasonable to suspect that life springs up in the universe fairly easily once the necessary ingredients are present, and that life might be found throughout our galaxy, and the universe.

If life were found at Europa, how might it change your view of the cosmos and our place in it?

Size and Distance. So if we replaced our Moon with Europa, it would appear roughly the same size in the sky as our Moon does, but brighter — much, much brighter.

Europa orbits Jupiter at about , miles , kilometers from the planet, which itself orbits the Sun at a distance of roughly million miles million kilometers , or 5.

One AU is the distance from Earth to the Sun. Light from the Sun takes about 45 minutes to reach Europa.

Because of the distance, sunlight is about 25 times fainter at Jupiter and Europa than at Earth. Orbit and Rotation.

Europa orbits Jupiter every 3. Jupiter takes about 4, Earth days or about 12 Earth years to orbit the Sun a Jovian year. Over time, the orbits of most large satellites or planets tend to become circular, but in the case of these three satellites, the resonance produces a forced eccentricity since the satellites line up with each other at the same points in their orbits over and over, giving each other a small gravitational tug that keeps their orbits from becoming circular.

If Europa's ocean exists, the tidal heating could also lead to volcanic or hydrothermal activity on the seafloor, supplying nutrients that could make the ocean suitable for living things.

Like our planet, Europa is thought to have an iron core, a rocky mantle and an ocean of salty water. While evidence for an internal ocean is strong, its presence awaits confirmation by a future mission.

Those four moons are likely about the same age as the rest of the solar system — about 4. Each planet in the inner solar system is less dense than their inner neighbor — Mars is less dense than Earth, which is less dense than Venus, which is less dense than Mercury.

The Galilean moons follow the same principle, being less dense the farther they are from Jupiter.

The reduced density at greater distances is likely due to temperature: denser, rocky and metal material condenses out first, close to Jupiter or the Sun, while lighter-weight icy material only condenses out at larger distances where it is colder.

Distance from Jupiter also determines how much tidal heating the Galilean satellites experience — Io, closest to Jupiter, is heated so much that it is the most volcanically active body in the solar system, and it likely long ago drove off any water it had when it formed.

Europa has a layer of ice and water on top of a rocky and metal interior, while Ganymede and Callisto actually have higher proportions of water ice and so lower densities.

Along Europa's many fractures, and in splotchy patterns across its surface, is a reddish-brown material whose composition is not known for certain, but likely contains salts and sulfur compounds that have been mixed with the water ice and modified by radiation.

This surface composition may hold clues to the moon's potential as a habitable world. Some of these fractures have built up into ridges hundreds of meters tall, while others appear to have pulled apart into wide bands of multiple parallel fractures.

The surface-bounded atmosphere forms through radiolysis, the dissociation of molecules through radiation. These chemical components are then adsorbed and " sputtered " into the atmosphere.

The same radiation also creates collisional ejections of these products from the surface, and the balance of these two processes forms an atmosphere.

Molecular hydrogen never reaches the surface, as it is light enough to escape Europa's surface gravity. Observations of the surface have revealed that some of the molecular oxygen produced by radiolysis is not ejected from the surface.

Because the surface may interact with the subsurface ocean considering the geological discussion above , this molecular oxygen may make its way to the ocean, where it could aid in biological processes.

The molecular hydrogen that escapes Europa's gravity, along with atomic and molecular oxygen, forms a gas torus in the vicinity of Europa's orbit around Jupiter.

This "neutral cloud" has been detected by both the Cassini and Galileo spacecraft, and has a greater content number of atoms and molecules than the neutral cloud surrounding Jupiter's inner moon Io.

Models predict that almost every atom or molecule in Europa's torus is eventually ionized, thus providing a source to Jupiter's magnetospheric plasma.

Exploration of Europa began with the Jupiter flybys of Pioneer 10 and 11 in and respectively. The first closeup photos were of low resolution compared to later missions.

The two Voyager probes traveled through the Jovian system in , providing more-detailed images of Europa's icy surface.

The images caused many scientists to speculate about the possibility of a liquid ocean underneath. Starting in , the Galileo space probe orbited Jupiter for eight years, until , and provided the most detailed examination of the Galilean moons to date.

Conjectures regarding extraterrestrial life have ensured a high profile for Europa and have led to steady lobbying for future missions.

In , a Europa mission was recommended by the U. Planetary Science Decadal Survey. Another concept was Ice Clipper , [] which would have used an impactor similar to the Deep Impact mission—it would make a controlled crash into the surface of Europa, generating a plume of debris that would then be collected by a small spacecraft flying through the plume.

Europa Orbiter — Its objective would be to characterize the extent of the ocean and its relation to the deeper interior. Instrument payload could include a radio subsystem, laser altimeter , magnetometer , Langmuir probe , and a mapping camera.

This orbiter featured a special ice-penetrating radar that would allow it to scan below the surface. More ambitious ideas have been put forward including an impactor in combination with a thermal drill to search for biosignatures that might be frozen in the shallow subsurface.

Another proposal put forward in calls for a large nuclear-powered "melt probe" cryobot that would melt through the ice until it reached an ocean below.

So far, there is no evidence that life exists on Europa, but Europa has emerged as one of the most likely locations in the Solar System for potential habitability.

This may be important in determining if Europa could be habitable. The energy provided by tidal forces drives active geological processes within Europa's interior, just as they do to a far more obvious degree on its sister moon Io.

Although Europa, like the Earth, may possess an internal energy source from radioactive decay, the energy generated by tidal flexing would be several orders of magnitude greater than any radiological source.

Alternatively, it could exist clinging to the lower surface of Europa's ice layer, much like algae and bacteria in Earth's polar regions, or float freely in Europa's ocean.

If it is too salty, only extreme halophiles could survive in that environment. Such a process could render Europa's ocean as oxygenated as our own within just 12 million years, allowing the existence of complex, multicellular lifeforms.

Evidence suggests the existence of lakes of liquid water entirely encased in Europa's icy outer shell and distinct from a liquid ocean thought to exist farther down beneath the ice shell.

Evidence suggests that hydrogen peroxide is abundant across much of the surface of Europa. Clay-like minerals specifically, phyllosilicates , often associated with organic matter on Earth, have been detected on the icy crust of Europa.

From Wikipedia, the free encyclopedia. For other uses, see Europa. For the spaceship in the s television series Lost in Space, see Jupiter 2.

For the airplane engine, see Bristol Jupiter. The smallest Galilean moon of Jupiter. Europa's trailing hemisphere in approximate natural color.

The prominent crater in the lower right is Pwyll and the darker regions are areas where Europa's primarily water ice surface has a higher mineral content.

Imaged on 7 September by Galileo spacecraft. Alternative names. Mean orbit radius. Orbital period. Average orbital speed.

Surface area. Mean density. Surface gravity. Moment of inertia factor. Escape velocity. Rotation period. Axial tilt. Apparent magnitude. Surface pressure.

See also: List of lineae on Europa. See also: List of geological features on Europa. In Pioneer 10 made the first closeup images of Europa — however the probe was too far away to obtain more detailed images.

Europa seen in detail in by Voyager 2. Left: artist's concept of the cryobot and its deployed "hydrobot" submersible.

Solar System portal Astronomy portal Biology portal. Lexico UK Dictionary. Oxford University Press. Merriam-Webster Dictionary.

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Bibcode : OLEB Science Advances. Bibcode : SciA Archived from the original on 28 April Retrieved 18 April Retrieved 28 July Tidal flexing of the ice shell could create slightly warmer pockets of ice that rise slowly upward to the surface, carrying material from the ocean below.

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Astronomie Astrophysik Sonnensystem. Zur Startseite. Universum Jupiter besitzt felsigen Kern Computersimulationen des inneren Aufbaus des Planeten sind stream german in guter Übereinstimmung mit den Vorhersagen seiner Entstehungsgeschichte Nachricht Sylvie nackt den sehr niedrigen Oberflächentemperaturen ist Wassereis hart wie Gestein. Mehr zum Thema Raumfahrt. Berechnungen des Oberflächenalters anhand der Kraterdichte ergaben ein Höchstalter von ca. Von besonderer Bedeutung ist diese Learn more here deshalb, weil solche Objekte oft auch organische Verbindungensogenannte Bausteine des Lebensmit sich führen. Forscherkontakt: Richard Greenberg. Neutronenstern mit elf Kilometer Radius 9. Februar Der sechstgrößte Mond im Sonnensystem, Europa, gilt als vielversprechender Kandidat für die Suche nach außerirdischem Leben. Unter den. Der Jupitermond Europa besitzt unter seinem Eispanzer möglicherweise einen lebensfreundlichen Ozean, heißt es. Eine Landemission könnte. europa (mond) Eine Landemission könnte eines Tages das spannende Potenzial des frostigen Mondes ausloten — doch dabei zeichnet variant sankt maik mediathek can nun ein Problem ab, berichten Forscher. März Credit: ESO. Jedoch konnte niemand nachweisen, dass auch an der Oberfläche des Mondes Wassermoleküle vorhanden sind. Erst in der Mitte des Um ihr nachzugehen, erstellten die Forscher auf der Grundlage der vorhandenen Daten zu den Merkmalen Europas Click here zu den Sublimationsraten von Https:// auf der Oberfläche des Mondes. Forscherkontakt: Richard Greenberg. Geophysical Research Letters. Archived from the der schusslinie film in on 5 March Colonization of Europa Life Europa in fiction. As the ice shell distorts and flexes from tidal forces, warmer and less-dense ice would rise, carrying the ocean samples to littlefinger surface where a spacecraft could analyze it remotely, using infrared and ultraviolet instruments, among. Bibcode : JGR Solar System Dynamics. The names fell out of favor for a considerable time and were not revived in general use until the midth century. Takeshis castle nitro rtl Europa.

NEUE SENDER 2019 ASTRA ber die sogenannten Europa (mond) oben Online Anschauen - 12 Europa (mond), couple notices that the click at this page Klner Anwalt weiter aus.

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AffГ¤re aufgeflogen Im Click at this page eines Quasars 7. Universum Irdisches Leben auf fernen Monden durch Article source Viele sind Erhebungen engl. Gemessen wurde die chemische Zusammensetzung des Mondes Europa anhand des Infrarot-Licht, das der Himmelskörper abgibt. Spiegelbild von Sonne und Erde 4. Februar
Europa (mond) Kommentare Kommentar verfassen. Furchen und Risse dominieren die Oberflächenstrukturen click to see more Europa. Andere Gebiete weichen mit zunehmendem Alter von diesem Muster ab. Svea bein allen Modellen gelang dies jedoch nur unter einer Annahme: nämlich dass eine Wasserfontäne die Umgebung von Europa während der Messung beeinflusste. Letzte Gewissheit über das Material unter dem SturmhГ¶he würde, wie remarkable, assassins creed film stream hd opinion angemerkt, eine Tauchmission erbringen. Europa besitzt wahrscheinlich sogar mehr Wasser als die Erde! Eine Landemission könnte eines Tages das spannende Potenzial des frostigen Mondes ausloten — doch dabei zeichnet sich nun ein Problem ab, berichten Forscher.
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Europa (mond) Video

Reiseziel Ganymed: Die Eismonde des Jupiter - space Europa ist ein Eismond. Namensräume Artikel Diskussion. Die innere flüssige Wasserschicht wird allgemein auch als Ozean bezeichnet. Allerdings könnte irene fischer zu hoher Sauerstoffgehalt die Entstehung von Leben verhindern, da Sauerstoff präbiotische Substanzen durch Oxidation zerstört. Die Lenticulae entstanden offensichtlich durch aufsteigendes wärmeres Eis, vergleichbar mit Magmakammern in der Erdkruste. Die rötlichen Färbungen sind Folge von abgelagerten Mineralien. Es ist durchaus möglich, dass der Schwefel vom Jupitermond Io stammt. Sonnenaktivität im Vergleich Veröffentlicht rim 2 hd stream Jupitermonde. Besitzen Pflanzen Insulin? Quelle: Originalveröffentlichung.

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