Archive for October 2020

Otherworldly Voices:2 – Your Martian Voice!   11 comments

 

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Standing outside on Mars with a view to taking a refreshing breath of fresh freezing cold Martian air whilst chatting about the stupendous view of neighbouring planet Jupiter might leave you wishing your body contained something else other than blood – seeing as it would repay you for the ill-thought up idea of going outside without a space suit by boiling you to death. You wouldn’t have too much time to converse about the dumb-founding beauty of the view of Jupiter as having been dumb enough to go outside in the first place and boil your blood you won’t last a matter of seconds anyway. This slightly pressing problem might possibly give you the completely understandable desire to have a good old scream before you die but even that isn’t going to go to plan. Nobody will hear you. Not least because most people wouldn’t be dumb enough to go outside on the Red Planet in the first place. But also, because the Martian atmosphere consists almost completely of carbon ­dioxide – 95% to be precise, and it does an awesome job of absorbing vibrations – such as those produced by your vocal cords. So, not only is screaming a waste of the precious time you have left, but if you thought you could accompany your ill-fated visit for fresh air on Mars with the ear-shattering sounds of your favourite music blasting out of that old ghetto blaster you brought with you from Earth – luck’s out. Krank up that volume all you like (but be quick – remember you have only seconds to live!) but it will still be little more than a distant tinkle of sound when you’re 10 metres away. Should you wish to sing along to it, the Martian air slows sound waves down to such an extent that you will produce nothing more than a hoarse, deep-toned croak.

Posted October 21, 2020 by europasicewolf in Astrobiology, Astronomy, Environment and Climate

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Otherworldly Voices   14 comments

What Would Your Voice Sound Like On Other Moons and Planets?

 

Scream, shout and yell into the vast and infinite realms of space in the ever-optimistic hope that someone or something might just hear you and do you think anyone or anything will cheerily respond to you? Maybe. But it always depends on whether anyone or anything can hear you!

originalCShouting your head off on another world doesn’t guarantee the noisy and well-loved sound of your terran-based vocal cords will resound in quite the same way in the atmospheres of other worlds comfortably nestled amongst the stars.

 

On the cosy home world of Earth sound whizzes happily and easily through the atmosphere thanks to a distinct lack of vibrations being absorbed by our gassy air. This is one of the particularly pleasing results of lots of nitrogen and just a tiny scrap of molecules of the carbon dioxide variety. The other handy bonus is of course that we can breathe…. Minor detail but worth a mention Be right back

Things start to get a little bit weird however, should you be posturing and screaming on worlds that are clearly not Earth. Different worlds, different atmospheric densities and all that scientific, technical stuff. Disappointed smile

Most of us are probably at least vaguely aware, (don’t worry if you’re not, maybe for the best!), that “in space no-one can hear you scream!) This detail tends to apply too, on the majority of worlds in space. By and large they don’t have any atmospheres at all, and the ones that do have ridiculously thin and weedy atmospheres that contain so few gases that it would be impossible for them to carry even a single stingy little sound wave. Not that this would worry you overly much as you wouldn’t be able to breathe anyway and therefore wouldn’t be alive to be annoyed by it. If you happened to be a planetary native of that particular world specially adapted to create vocalisations on a super-sonic sound scale, of the nature that would shatter lesser worlds into a zillion pieces then you might just about manage to make yourself heard in some shape or form. Although it would most probably end up sounding something more like a whispering little sound in the vast void of outer space. Winking smile