All stars radiate infra-red along with the rest of the spectrum.
Quasars.
Hot objects emit infrared electromagnetic waves.
Sound waves cannot travel through space.
Warm objects emit infrared waves, which are a type of electromagnetic radiation. These waves are not visible to the human eye but can be felt as heat.
electronic sound waves
We are using radio waves to send messages to outer space.
Sonar waves are a type of sound wave that are emitted and detected underwater to determine the location and features of objects. They are high-frequency waves that travel through water and bounce off objects, allowing for the measurement of distance and shape.
Positive space
Radio waves are often referred to as space waves because they have the ability to move through space. Radio waves are a type of electromagnetic radiation.
Electromagnetic energy travels through space in the form of waves. These waves include light, radio waves, X-rays, and microwaves, among others.
sound waves can not travel through space since they use the air around us to move.
Light waves do, but sound waves cannot, because in space is no medium to carry the vibration. Radio, TV and others can travel in space also.