This is what it says in wikia:

"Superhuman Senses: Thor's superhuman sense's allow him to see objects as far out as the edge of the Solar System,^[171] allow him to track objects traveling faster than light,^[172] and hear cries from the other side of the planet.^[173]"

Does this mean he can sense all objects on earth IF i was in our solar system? Let's say he was e.g. looking for a villain on earth, and this villain was on earth. Would he be able to sense him, even if the villain isn't making a sound or hurting anyone, but simply hiding? (And what if it was an object? E.g. a nuclear device or something)

I don't think his senses are quite what you are asking. I think he can basically track ftl objects to some degree and can use Mjolnir to do other things. Such as taking him to where he wants to go even if he doesn't know where exactly it is. Mjolnir has certain inherent plot powers.

@spambot:

So what you're saying is that these powers come from Mjolnir?

@hashem2200: No, I'm saying that there are certain things Mjolnir can do which almost count as senses for Thor sometimes.

Thor has heard prayers to him from across the galaxy before, and when he was on a ship on earth in a storm, he was able to see perfectly clearly when none of the humans could, because, in his words, he had "the eyes of a god". So his senses are enhanced greatly, but he doesn't use them that often. Female Thor was also able to perform surgery, so she had to have been able to see at a microscopic level

@jayc1324: Do you think it's fair to apply her feats to Thor? I think it should be since she is essentially using his powers but I think people have problems with it

I wouldn't put it past Thor to see at the micrscopic level. He has crazy sense. I didn't think they were that good.

I think it is fair. All of her abilities are Thor's, that's the whole point. She has the power of Thor. Every ability she has comes from Thor's power. Some people will have a problem with it but it makes perfect sense to me

@jayc1324: I agree

@jayc1324: though some come from Mother Storm herself :)

Legend says he can smell Mjolnir from light-years away.

I remember a book on Thors origin, I think Thor season 1.when Donald Blake first picks up the hammer and is turned to Thor, he says he can sense every raindrop and feel them (or something like that, I'll search for a scan online)