Portal:Technology/DYK/15

• ... that the Chemical Automatics Design Bureau produced the Soviet Union's only operational nuclear rocket engine?
• ... that the Persian king Cyrus the Younger invented the scythed chariot (pictured)?
• ... that Mercedes Reaves, a Puerto Rican research engineer and scientist, is responsible for the design of a viable, full-scale solar sail at the NASA Langley Research Center?

Source

1. Wikipedia:Recent additions NUMBER, Numbered archive of Main Page appearance.
2. Wikipedia:Recent additions NUMBER, Numbered archive of Main Page appearance.
3. Wikipedia:Recent additions NUMBER, Numbered archive of Main Page appearance.