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Where is the earthly subtemper?



The Earth Moon. Credit: Public domain
"Can the moons have moons?"


This simple question asked by Carnegie's four-year-old son, Jonah Kollmayer, has begun it all. Shortly after that initial queue, Collmaier coordinated a program at the Milky Way Institute of Theoretical Physics at Kavt (KITP), while her classmate from Shaun Raymond University of Bordeaux University attended a parallel KITP program on Earth Planetary Dynamics. After discussing this very simple question at a seminar, the two united to resolve it. Their findings are the basis of an article published in Monthly Announcements of the Royal Astronomical Society .

At the end of last year, the duo launched an Internet storm when they published a draft of their article exploring the possibility of moons. this orbit of other moons on the prescript server for manuscripts in physics and astronomy.

The online conversation is obsessed with the best term to describe such phenomena with options like moon moons and mini-moons that are thrown into the mix. But the nomenclature was not the basis of Kolmayer and Raymond's investigation (although they have a preference for substitutions). On the contrary, they seek to define physical parameters for the moons that could be stably orbited by other, smaller moons.

"Planets circle around the stars and moons of the orbital planets, so it is natural to ask whether smaller orbits can orbit larger." Their calculations show that only large satellites on the broad orbits of their planets can to host moons The forces of tides from the planet and the Moon act to destabilize the orbits of subterfuge circling the smaller moons or moons that are closest to them Moon of Jupiter Calisto, Saturn Titan and Yapet, as well as own Lun on the Earth, are on the satellite that can own their own satellite, although no one has been found yet, but they add that additional calculations are needed to address the possible sources of submutation instability, such as the lack of known swords in our solar system, even in orbit around the moons, theoretically can support such objects, can offer us clues about how our own and neighboring planets, and that there are still many unresolved issues, "explains Kollmayer.

It is believed that the moons that surround Saturn and Jupiter are born of the gas and dust disc that surround planets with gas giants in the later stages of their formation. Our own moon, on the other hand, is believed to have originated as a result of a huge impact between the young Earth and the Mars-sized body. The lack of stable submonics can help scientists better understand the different forces that form the satellites we see.

Collmaier added, "and of course, this could inform us about continuing efforts to understand how planetary systems are developing elsewhere and how our own Solar Systems System fits into the thousands of others discovered by planet-hunting missions." For example, the newly discovered possible exoom in orbit around Kepler 1

625b of Jupiter is the correct mass and distance from its host to support the submona, Collmeyer and Raymond. found. Although the outlined slope of its orbit may make it difficult for this object to remain stable. However, discovering the submona around the exomun will be very difficult

Considering the excitement around the search for potentially inhabited exoplanets, Collmaier and Raymond estimated that the best scenario for living on large submons was around massive stars. Although extremely common, small red dwarfs are so pale and their habitable areas are so close that the tidal forces are very strong and the sneakers (and often the moons themselves) are unstable. stable and thus serves as a time capsule or pre-post. On a steady orbit around the moon – like the moon gate proposed by NASA – an underwater boat will keep the treasures of mankind safe for offspring long after the Earth becomes unsuitable for life. Collmeyer and Raymond agree that there is much more work to do (and have fun) to understand the replacements (or lack thereof), such as a rocky record of the history of planet-moon systems.


See also:
In search of alien life on other moons

More Information:
Monthly Announcements of the Royal Astronomical Society: Letters (2018). DOI: 10.1093 / mnrasl / sly219


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