The speed of sound is not constant, and it varies based on the temperature and density of the medium through which it travels. Sound always travels fast when the medium is dense.
Scientists recently confirmed the speed of sound on Mars Planet using equipment on the Perseverance rover. They found that the speed of sound on Mars is strangely different.
The sound would take slightly longer to get to your ear in the martian atmosphere. Mars has a lower speed of sound, and it travels around 540 miles per hour, whereas, on Earth, the speed of sound is 760 miles per hour on Earth.
The atmosphere of Mars is about 100 times less dense than on Earth. The denser atmosphere affects how sound waves travel from the source to the detector, resulting in a softer signal.
While communicating on Mars, one needs to get closer to a sound source to hear it at the same volume as you would on Earth.
Mars’ atmosphere consists of 96% of CO2. This absorbs a lot of higher-pitched sounds, so only lower-pitched sounds would travel long distances.
This experience was created with the Perseverance mission team to approximate how sounds would be different in the atmosphere of Mars. The National Aeronautics and Space Administration’s Perseverance rover landed successfully on the surface of Mars a little more than a year ago. Since that time, it has been rolling around, studying the landscape with a host of sensors and cameras.