16 - 18 years old - Movie of Saturn's moon, Tethys, passing behind Rhea
Elena Haurie Lara
Carmen Ballano Pérez
To do this project we have chosen the next objective: study the geologic activity and the possibility of life in the satellites Rhea and Thetis, due to a recent discovery by the Cassini mission that Thetis and Dione are thrown particles to the space. But our project is not to study Dione we are only going to study Rhea and Thetis.
Thetis is a frozen satellite with medium size, very similar to Rhea. It is covered of craters and it is density is approximately the same as the water, so we can think that is composed principal with this. The surface has lot of indents caused by failures in the frozen surface, so we can differentiate two types: one composed of regions with hight density of cratering and the other is a ring with not a lot of craters. All of this characteristics show that Thetis was being geologically active once, so we have chosen this objective because why not it can be active nowadays? Cassini mission discovered a possible geological activity in the satellite and due to this we think that is interesting to continue studying the satellite and discovered more curiosities that can be extremely useful to the development of the science.
Secondly, we have chosen another important satellite of Saturn, Rhea, and we are going to talk about some characteristics of it. Is the second biggest satellite of Saturn. Scientific think that it has a rocky core. It has been discovered by Giovanni Cassini. Is a frozen moon and its density shows that it can have a a rocky core. The surface has lot of craters and brilliant marks. Cassini mission discovered a little atmosphere composed with oxigene and dioxide of carbon. The discovering that is the only celestial corps, apart of the Earth, in the scientific have detected atmospheric oxigene, whit quantities that exceed this of the Earth. This characteristic of Rhea can be really important because we arrive at the conclusion that if there are oxigene, why not can exist life in it?
In conclusion, we can stand out the importance of the Cassini mission in the discovering of many advances to the humans. And also, we want to mention the importance of investigation nowadays, because we don’t realize about that but we are hear due to this. We hope that over the years we could continue investigate more and we will arrive new findings, because although science has advanced a lot the last years, we haven’t arrived to discovered a thousandth part of the curiosities that involved the universe.