Exobiotanica

Makota Azuma managed to take the geeky phenomena of sending items to space with a large balloon and turn it into something a bit more artistic than the norm. Granted, Space Pizza is already pretty much the pinnacle of things you can send to space but his Exobiotanica project sends a variety of flowers and bonsai trees into the upper atmosphere.

There's also something lovely in the morbid nature of the flowers death - both in their being uprooted for the project and their plummet back down to the surface.

Read more here and here.