are space marines sterile

One of the highly regarded space marines novels is 'Horus Rising' by Dan Abnett. It sets the stage for the Horus Heresy saga really well.

In Warhammer 40,000, the Ultramarines are very famous. They are known for their discipline and combat prowess.

Well, many fans consider 'Horus Rising' to be the best. It's the start of an epic story that shows the fall of Horus in a really engaging way.

They are often depicted as highly skilled and fearless. They carry specialized equipment for handling explosives, like advanced detonators and blast - resistant gear.

Space marines in trademark science fiction are usually depicted as the elite of the military forces in a science - fictional universe. Their physical strength is often augmented through genetic engineering or advanced training regimens. They have a distinct look, with their armor being a recognizable symbol. They are not just fighters but also symbols of the human (or whatever species they represent) presence in space. Their stories often involve themes of heroism, sacrifice, and the exploration and protection of the unknown regions of space. They interact with a wide range of characters, from scientists who develop their equipment to the civilians they are sworn to protect.

No, she isn't. In the comics, there's no indication that Black Widow is sterile.

Yes, in some comic storylines, Natasha Romanoff is depicted as sterile.

Space marines are usually more highly specialized. While regular soldiers might be trained for general combat on Earth, space marines are trained for the unique challenges of space, like zero - gravity combat and dealing with alien life forms.

In science fiction, a demolitions engineer among space marines is often crucial for strategic operations. They are responsible for using explosives to breach enemy fortifications, clear obstacles, and create diversions. For example, when space marines are attacking an alien stronghold, the demolitions engineer might plant charges on the gates or walls to create an entry point.

Yes, they are. The Neo Marines do have appearances in the manga.