Sleepovers -- Juvenile fiction. Extraterrestrial beings -- Fiction. Friendship -- Fiction. Science fiction.

Interstellar travel -- Juvenile fiction. Museums -- Fiction. Friendship -- Fiction. Science fiction.

Aliens -- Juvenile fiction. Martians -- Juvenile fiction. Space warfare -- Juvenile fiction. Mars (Planet) -- Juvenile fiction. Science fiction.

Science -- Experiments -- Juvenile fiction. Science projects -- Juvenile fiction. Chemistry -- Juvenile fiction. Schools -- Juvenile fiction.

Tide pools -- Juvenile fiction. School field trips -- Juvenile fiction. Beaches -- Juvenile fiction.

Adventure and adventurers -- Juvenile fiction. Underwater exploration -- Juvenile fiction. Marine sciences -- Juvenile fiction. High schools -- Juvenile fiction. Schools -- Juvenile fiction.

Chemistry -- Juvenile fiction. Science projects -- Juvenile fiction. Rockets (Aeronautics) -- Juvenile fiction. Birthdays -- Juvenile fiction.

Jedi (Fictitious characters) -- Juvenile literature. Good and evil -- Juvenile literature. Space warfare -- Juvenile literature. Imaginary wars and battles -- Juvenile literature. LEGO toys -- Juvenile literature.

Hamsters -- Juvenile fiction. Science fairs -- Juvenile fiction. Science -- Experiments -- Juvenile fiction. Growth (Plants) -- Juvenile fiction.

Escape room games -- Juvenile fiction. Cooperativeness -- Juvenile fiction. Science -- Experiments -- Juvenile fiction. Schools -- Juvenile fiction.

Child detectives -- Juvenile fiction. Science -- Experiments -- Juvenile fiction. Theater -- Juvenile fiction. Sabotage -- Juvenile fiction. Schools -- Juvenile fiction.

Interstellar travel -- Juvenile fiction. Life on other planets -- Juvenile fiction. Disguise -- Juvenile fiction. Extraterrestrial beings -- Fiction. Friendship -- Fiction.