which area do you think has more mysteries that have yet to be discovered?

My kitchen surpasses them all!

Space. Just imagine what we could learn if we were able to send a probe into a black hole.

Neither one is that mysterious any more. Thanks to human effort. Inner space is the next one to work out.

space... could be billions of oceans out there with trillions of lifeforms that we cannot even begin to fathom...

That might depend on whom you ask: an oceanologist, or an astrophysicist. 😁

oceans for sure no matter how vast space is

Oceans

Ocean

Oceans

They both would have a lot... I'd say with the expansiveness of the universe, it has a lot more.

However, discoveries in the ocean will probably be more plentiful because they are more feasible.