Complex sentence: Super-advanced aliens aiding the development of life take an interest in the primitive life forms under Europa's ice and transform Jupiter into a star to kick-start their evolution, and forbid humans from landing on or colonizing Europa.
Split into simpler sentences: Super-advanced aliens aiding the development of life take an interest in the primitive life forms under Europa's ice. They transform Jupiter into a star to kick-start their evolution, and forbid humans from landing on or colonizing Europa.