Sci/Tech
New solar sail can propel spacecraft without power source
A domestic think tank has developed a "solar sail" to power spacecraft using solar winds. The Korea Aerospace Research Institute (KARI) on Feb. 13 said it developed and demonstrated the prototype of a solar sail deployment device.
Feb 18, 2025
Navy launches 2nd 3,000-ton submarine Ahn Mu
Nov 11, 2020
