The following innovations and equipment have been a critical part to our exploration in Space or Space exploration on searching life on Mars. Such objects which are mostly unmanned gives us the information that the man can't reach in these generation and play a big part of charting the uncharted regions of the universe especially in Mars and becoming a tool to understand the world outside of our planet.
200? Umm the newest here was the early Iron Age which was 600... but if you meant 2000 bc it would be B.THE LATE STONE AGE
