[Urdu/Hindi] Why Do We Send Messages to Aliens?

In 1974, astronomers used the Arecibo Observatory to send a message to a star cluster called M13. It is located 25,000 light years away. So if anyone is there, their response will get to us in 50,000 years!! So then what was really the point of sending that message? Plus what language do you use to communicate with aliens? Please join astrophysicist Salman Hameed in exploring these questions and more.For the video of this podcast: https://youtu.be/4bTrmQTAywM