All source except for a texture. See SBS. Background was just Color Fill layers and Brushing. (1 year and 141 days ago)
The evolution of future submarines for military use will be driven by the trend to use smaller, autonomous, and unmanned vehicles to perform missions both under and above the sea. (5 years and 839 days ago)
The planet Mars, crimson and bright, filling our telescopes with vague intimations of almost-familiar landforms.
Using NASA Imagery
(5 years and 1269 days ago)