I'm not sure specifically as I haven't read the exact story. But usually in a story about the moons of Jupiter, there could be scientists. They would be the ones studying the moons, making observations and trying to understand more about them.
The main theme could be exploration. Since it's about the moons of Jupiter, it might explore the idea of discovery, both in a scientific sense and perhaps on a more personal level of the characters involved in the story.
In this short story, the themes of identity and belonging seem likely. Characters could be searching for who they are and where they fit in. There may also be a theme of mortality, as they come to terms with the inevitability of death. Additionally, the theme of nature might play a role, with the moons of Jupiter serving as a natural element that influences the characters' thoughts and actions in some way.
I don't know for certain as I haven't read the story, but it's likely the boys themselves are the main characters.
The story 'The Moons of Jupiter' by Alice Munro may be centered around human emotions and experiences. Munro often delves into the complex feelings that her characters have. It could be that the story follows a character or a group of characters who are at a crossroads in their lives. The mention of the moons of Jupiter could imply a sense of vastness and mystery. Maybe the characters are trying to understand something bigger than themselves, like how the moons orbit Jupiter in a complex and fascinating way, and this could be paralleled to their own attempts to navigate their lives.
Since I don't know the details of this '2 moons novel', I can't tell you the main characters.
I don't know the specific main characters in '2moons novel' as I haven't read it.
The main character is Salamanca Tree Hiddle. There are also important characters like her grandparents, Gram and Gramps.
Since it's a sequel, we can expect the protagonists from the first '2moons' to be back. They might be joined by new allies or antagonists. There could be a character who has a special ability or knowledge that becomes crucial to the story. Also, characters who have complex backstories and relationships with others are often the main ones, so it's possible the novel focuses on such characters from the '2moons' universe.
Without having read the '2moons the series novel', I can only guess. It's possible that there are main characters who are outcasts in their society at the start but gradually become important figures. Maybe there are characters with strong moral compasses who are trying to right the wrongs in their world. There could also be characters with mysterious pasts that are slowly revealed throughout the series, adding depth to their personalities and the overall story.
I don't know as I haven't read the novel, so I can't say for sure who the main characters are.