The plutonic aliens have already hacked our probe and are now probably busy rifling through all the Earth's networks, looking for information about our weaknesses, locations of critical infrastructure, as well as targetable exploits and so on. Tomorrow the shit hits the fan! Remember that I called it!
They'd probably be thinking something along the lines of:
"What? It's so hot over there that H2O is naturally found in liquid state?!?!?! Fuck that, let's stay home!"