I just started thinking about it. Why is space exploration even that necessary? They're spending so much money on it when we have so much problems in our own planet..
We're talking about exploration. Satellites aren't exploring anything, they're basically just infrastructure.
As is depicted in the OP's picture, I'm specifically talking about sending humans to space, and additionally, using them to explore deeper into space. It's mostly pointless as anything other than a propaganda tool. Anything that can be discovered by sending humans out in space can be discovered by humans on Earth.
The space station might need humans on it to maintain it, but again, the station isn't exploring anything.