This photo (left) went viral as a ‘Hubble image of Earth in her cradle of clouds,’ but it’s actually CGI artwork. Hubble orbits at 8km per second, so the photos taken of Earth as it races by just end up looking like white streaks (right). Source
You don’t usually point deep space telescopes at Earth for the same reason you don’t use microscopes to look at things very far away. It’s a completely different set of skills and a completely different set of lenses is required.