NASA's Marshall Space Flight Center:
3C294: Chandra Finds Most Distant X-ray Galaxy Cluster
steinmetznicolas:
Dark version of Eltz Castle
phototecture.de:
Urban Minimalism #1902
geirykristiansen:
An Evening Runner
Hi-Fi Fotos:
Stars & Stripes Car
NASA's Marshall Space Flight Center:
A Fusion of Galaxy Clusters