ISC3 stands for International Space Station Crew-3 and it's a group of astronauts who are going to live and work together on the International Space Station (ISS). They will be working on important scientific experiments in the field of biology, Earth and space science, technology, and other areas. The astronauts will also help keep the ISS running and performing essential maintenance work. They'll stay on the ISS for about 6 months, during which time they will stay in touch with family and loved ones using onboard computers and communication equipment. They'll also have access to special astronaut training and support from mission controllers on the ground. ISC3 is an amazing opportunity for these astronauts to explore new places and discover new things in space!