No, we cannot effectively communicate with other planets through sound waves in space. Sound waves require a medium, such as air, water, or a solid material, to propagate. In the vacuum of space, where there is no air or other matter to carry sound waves, they cannot travel and be heard in the same way as they do on Earth.
To communicate with other planets or spacecraft in space, we rely on other forms of communication, such as radio waves. Radio waves are a form of electromagnetic radiation that can travel through the vacuum of space. They can be used to transmit and receive signals over vast distances, allowing for long-distance communication with spacecraft and potentially extraterrestrial civilizations.
Regarding the second part of your question, sound waves do not travel far in the Earth's atmosphere, let alone in the vacuum of space. Sound intensity decreases rapidly with distance due to factors like air absorption and dispersion. When you scream at full force on the Earth's surface, the sound waves will gradually dissipate and become increasingly faint as they propagate through the air.
In the vastness of space, with no medium to carry sound waves, your scream would not be audible to anyone or anything far away. It would quickly dissipate and be lost in the emptiness of space.