I traveled through hundreds of worlds at once

Speaking of Earth Thanos, he is very familiar with the hiding places of the two Infinity Stones, the Time Stone and the Space Stone, plus the Mind Stone that he had lent to Loki before, but was left on Earth by that useless Loki. It is a miracle in the entire universe that a remote small planet in the Milky Way actually has three Infinity Stones.

If it weren't for the Supreme Sorcerer on Earth and Odin of Asgard being too difficult to deal with, he would have led his fleet to conquer Earth and got the three Infinity Stones in one fell swoop.

But now Odin has died in battle and the main force of Asgard has been destroyed. The biggest obstacle to stopping him from taking the Infinity Stones is