I would like to ask if any of you know about a book about a group of adults and teenagers travel to every single planets in our solar system by an accident
At the beginning of the series, a group of people are invited to visit a scientist's place to see his high-tech spaceship which has the Cone shape. Then all by a sudden they activated it and it flew into space. They visited one by one of the planets Saturn, Jupiter, Mars, Venus, Mercury, ... In some planets they found different lifeforms and they have to figure out their language by the talent of the professor.
I still remember that the characters in the story are a teenager boy, the narrator, a mechanic, a professor who is good at linguistics and a young girl.
I read the Vietnamese translation in 1996 when I was 10 so the original one should be published before 1995.