After Chandrayaan 3 , in the whole world , many space missions are in line ,
Through this space missions, we will gather new information about space
In this missions, Nasa artemis mission and Indian Gaganyaan missions are very important, both are manned missions
Have you ever thought, how astronauts talk in the space, in vaccum
Vaccum is where there is no gravity, and no atmospheric pressure,
In this vaccum , no sound can travel, so astronauts talk with the help of technology
This technique is called radio waves , it is a type of electromagnetic waves , which travels through signal in space
Astronauts have a wireless device, by which signal goes to each other, and the device converts it into sound
In the spacecraft, their is no need of device, because it has air pressure in it
Universe discoveries 