Well, Lifeforce Science Fiction can cover a wide range of topics. It could be about the search for new forms of energy that are related to life itself. For example, stories might imagine a world where a new discovery in bio - energy changes the whole power structure on Earth. It also might explore the idea of life on other planets and how that life force might be different from what we know on Earth. Maybe there are beings out there that have a completely different way of existing, and these stories would look at the implications of that for our understanding of life in general.
One of the popular authors could be Arthur C. Clarke. His works often touch on the power of scientific discovery and how it relates to life in the universe.
The Invincible comics don't have nudity. They adhere to a standard of presenting exciting plots and engaging characters without including such elements.
In American fiction, the occurrence of nudity is not a blanket feature. It can be found in certain works, especially those exploring adult themes or seeking to make a bold statement, but many mainstream and popular fiction titles avoid it altogether.
There is typically no nudity in boys' comics. Comics for this demographic are usually regulated and designed to be family-friendly, without including anything inappropriate like that.