When we think of astrobiology within our
The Moon with a capital “L” is the only natural satellite of the Earth; probably the result of a collision 4.4 years ago…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/c/7/8/c785911d64_50034415_lune-05 .jpg ” data-url=”https://news.google.com/sciences/definitions/universe-lune-2550/” data-more=”Read more”> outer solar system: some, like – moon of – or of – moon of – Suspected of harboring a liquid internal ocean, which could harbor life, prompting the search for extraterrestrial life outside of the one’s .
Gravitational interactions to heat the interior of the moons?
Understand the mechanisms that intervene to form a liquid ocean inside a body far from its, we can take the example of Europa, a satellite of Jupiter. Here the solar energy is too weak to keep liquid water there, yet scientists strongly suspect the presence of a . According to the researchers, it would be the gravitational interactions between the Moon and its host planet, Jupiter, that would allow the generation of in the interior of Europa, and thus maintain a sufficiently high temperature under the surface of the moon to form a layer of liquid water there: this is what is called heating by effect of .
Considering the relatively large number of moons likely to harbor an inner ocean in our Solar System alone, scientists are considering the possibilities of observing similar multi-lunar systems elsewhere in our Solar System.
This definition derives from the one that physicists give to this term. For them, the phenomenon…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/2/4/c/24c2c6553e_94983_resonance.jpg” data-url=”https:/ /news.google.com/science/definitions/physics-resonance-4079/” data-more=”Read more”> orbital – for example when the Period of revolution of the Earth
In celestial mechanics, we call “revolutionary motion” a periodic circular or elliptical displacement such as…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/9/3/ 4 /93429f5b28_79789_periode-revolution.jpg” data-url=”https://news.google.com/sciences/definitions/astronomie-periode-revolution-15190/” data-more=”Read more”> of a moon around its host planet is twice as long as a second – between different moons could increase tidal heating. In some cases, these resonance phenomena could increase the eccentricity of a moon, also increasing the heating effects. In the models used in the study, tidal heating can, in the most extreme theoretical case, heat the interior of a moon by more than 200°C, for a moon orbiting a moon. Exoplanets are very old in astronomy. Its existence is indirectly attested for the first time in…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/c/b/b/cbb070c40f_50034423_exoplanet-nasa-esa -g – bacon-01.jpg” data-url=”https://news.google.com/sciences/definitions/astronomy-exoplanet-2576/” data-more=”Read More”> terrestrial type in two to four days.
Gravitational interactions to stabilize a system?
But the gravitational interactions between two bodies can have other
Liquid in nature, the outer core (density 10) is…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/7/4/6/7466fb8049_50004180_terre-270907. jpg” data-url=”https://news.google.com/planet/definitions/structure-earth-earth-core-13836/” data-more=”Read More”> generating the that protects us from Its energy is typically 1 GeV (the energy that an electron would have accelerated by a voltage…” data-url=”https://news.google.com/sciences/definitions/univers-rayon -cosmic – 2446/” data-more=”Read more”> and that protects our des This wind is not very dense (10 particles per cubic centimeter), but it is very fast (400 to 800 km/s). It is a supersonic wind (it moves faster than the waves…” data-url=”https://news.google.com/sciences/definitions/univers-vent-solaire-2445/” data-more =”Read more” > . Thus, gravitational interactions between a planet and its moons have effects on the habitability of both the moons and the planet.
These results have important applications in the search for life outside our solar system, now including the search for exomoons, which are very difficult to find. According to the study authors, the effects induced by gravitational interactions between an exoplanet and its possible moons could, on the other hand, be visible, potentially facilitating the detection of exomoons.
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