This isn't your first close-up of another planet's biosphere... it's actually the Maldives islands on Earth, as viewed from the International Space Station. A couple of ISS astronauts have been twittering amazing pictures of our planet.
The Earth and moon, from astro_jose.
Noctilucent clouds, from astro_soichi
Golden Gate Bridge, from astro_soichi
ISS by astro_jose