because, at bnl, space is the final "fun"- tier.
greetings and congratulations, captain! if you're seeing this, that means your extraterrestrial vegetation evaluator, or.  "eve" probe, has returned from earth with a confirmed specimen of ongoing photosynthesis!
that's right, it means it's time to go back home!
now that earth has been restored to a life-sustaining status, by golly, we can begin "operation recolonize"!
simply follow this manual's instructions to place the plant in your ship's holo- detector, and the -- -- axiom -- will immediately navigate your return to earth! it's that easy!
now, due to the effects of micro-gravity, you and your passengers may have suffered some slight bone loss. but i'm sure a few laps around your ship's jogging track will get you back in shape in no time.
if you have any further questions just consult your operation manual. see you back home real soon.
just cut it off, will ya?! hey there, autopilots! uh, got some bad news. operation cleanup has, uh, well.  failed! wouldn't you know, rising toxicity levels have made life unsustainable on earth.
darn it all, we're going to have to cancel operation recolonize. so just, uh. just stay the course. rather than try to fix this problem, it'll just be easier if everyone remains in space.
alright, uh. uh. i'm giving override directive: "a113". go to full autopilot. take control of everything! and do not return to earth! repeat! do not return to earth! now let's get the heck out of here.