Planet caravan, 2018.
Steel & zinc

"As I approached the top of this arc, it was as if time stood still, and I was flooded with both emotion and awareness. But as I looked down at the Earth - this stunning, fragile oasis, this island that has been given to us, and that has protected all life from the harshness of space - a sadness came over me, and I was hit in the gut with an undeniable, sobering contradiction".
Ron Garan, Nasa astronaut.