Korean space officials are scrambling to minimize the chance of one of their satellites colliding with some space debris.
U.S. monitoring agencies warned Korea on Friday that the country's Science and Technology Satellite 3 could potentially crash into the debris on Sunday evening, Korea time, unless measures are taken.
Korea's Ministry of Science, ICT and Future Planning says officials will attempt to prevent a collision by changing the satellite's altitude during that time period.
The debris they are watching is one of thousands of pieces of twisted metal that was produced after a Russian and U.S. satellite crashed into each other in 2009.
The Korean satellite, launched in November 2013, is used to forecast geological events.