Can we talk in space (outside satellites)?

Answer - Radio sound waves

Article - How do the astronauts communicate in space if sound cannot travel in a vacuum?

http://curious.astro.cornell.edu...

Sound cannot travel through the vacuum of space, but visible light and other forms of electromagnetic radiation can. One of these forms is commonly called radio. The astronauts have devices in their helmets which transfer the sound waves from their voices into radio waves and transmit it to the ground (or other astronauts in space). This is exactly the same as how your radio at home works. Radio waves are often thought of as a form of sound because of their use in this way, but radio waves are NOT sound waves - they are a form of electromagnetic radiation analogous to visible light, and therefore can propagate through a vacuum.


Should Elon Musk be allowed to land on Mars?

With proper precautions, of course! We need to make sure that we don't contaminate Mars, we also need to make sure that all passengers are consenting adults cognisant of the dangers, and that they have no criminal record, because interplanetary exrtidition is a pain. Also make sure that they are of proper

What is your favorite thing about traveling?

The thing is travelling exposes you to lot of things the type of people culture.Favorite thing about travelling is the versatile culture that you get to see and it's never the same meaning it changes from village to village the culture is so much versatile that you just fall in love with