cool to see this animation about speed of light & communicating with Mars.
https://www.msn.com/en-us/news/technology/a-scientist-s-simple-animation-shows-why-there-won-t-be-a-way-to-communicate-with-astronauts-on-mars-in-real-time/ar-BB1aQ5WZ?ocid=msedgntp
https://www.msn.com/en-us/news/technology/a-scientist-s-simple-animation-shows-why-there-won-t-be-a-way-to-communicate-with-astronauts-on-mars-in-real-time/ar-BB1aQ5WZ?ocid=msedgntp