Is Warhammer 40k in the same universe as Warhammer?

Warhammer and Warhammer 40,000 are set in the same multiverse but not the same universe.

What is the difference between Warhammer and Warhammer 40k?

Warhammer is a fantasy franchise, with elves, dwarfs, orcs, goblins, etc. Warhammer 40k is a sci-fi franchise, with different alien factions like orks (similar enough to "orcs"), eldar, necrons, t'au, tyranids, etc. They are two very distinct settings and things, but similar overall concepts in their games.

What edition is Warhammer 40k on?

Warhammer 40,000 8th Edition (also known as Warhammer 41,000: Age of the Emperor to the rumourmongers) is the newest edition of everybody's favorite wargame, which picks things up where the Gathering Storm campaigns (AKA 40k End Times, meaning we're living literally after year 40,999 now) left off, and was released

Who is the strongest character in Warhammer 40k?

The most Powerful Character in 40k at the Moment is The God Emperor of Mankind. His power is strong enough to challenge all four chaos gods combine while holding a warp tear shut in the middle of Terra.