Originally Posted by Rust
It's very possible that they're playing up that angle, that earth is being eyed by Jor-El as a haven or something due to its conditions.
Yeah we know, or think we know, that he sends a scout ship there ahead. That has Kal-Els suit and his 'ghost' or some recording summarizing Kryptons doom. And he sends the key to it with baby Kal.
It's clearly all been premeditated by him at some point as opposed to sudden crisis and seismic core collapse under Kryptons surface and only desperately managing to save Clark just in time (not that that still can't happen to some extent, it's just early planning would have been in place by him as well).