This is the "wildest" planet of all the Space Sound Series.
Multiple types of sounds swirl in 3-D all around you which sound like - dolphins, whales, birds, ocean, voices. The sounds on Voice of Earth are beyond amazing…
This recording was used as part of a one hour TV special in Japan for its effectiveness in alleviating sleep disorders in children.
The Voice of Earth Sounds come from the interaction of the Solar Wind with the magnetosphere of Earth. You are hearing the Aura Borealis, NASA Injun I, Hawkeye, IMP1 and ISEE I Space Probes Recordings.
The energy production of the Sun is far from even and fluctuates on an 11 year cycle. Maximum production coincides with high sunspot activity when processes on the Sun's surface throw particles far out into space. These particles are called the solar wind. When the Solar Wind collides with the magnetosphere with a sufficient number of particles, it causes the northern lights.
These space sounds of Earth were recorded by the Injun I, Hawkeye, IMP I and ISEE I space probes from Earth orbit.
Although space is a vacuum, this does not mean that there is no sound. it only means that there is no air in space to act as a medium to transmit soundwaves to your ear. The specially designed instruments on board these probes were designed to pick up and record these vibrational frequencies. This information, which was sent back to Earth and decoded, are the beautiful and intriguing sounds you hear on this recording. The sounds you hear are interactions of the solar wind with the Earth's magnetosphere, ionosphere, plasma wave phenomena and interactions between Earth's ionosphere and magnetosphere. These vibration frequencies are all exactly within the range of human hearing, 20 - 20,000 Hz. This is truly the real "Voice" of Earth.
These recordings have been specially processed, filtered and spacially mastered in 3-D sound for deep relaxation and stress reduction.
For more information about plasma and magnetic fields and their relationship to our sound recordings from space, consult the April 1991 issue of Scientific American Magazine - article entitled "Collisionless Shock Waves".
Special thanks to our friends and contacts at various U.S National Space Agencies and Universities. This Space Recording Series is dedicated to the memory of Fred Scarf, PhD, who developed the acoustic recording project for Voyager and is directly responsible for the sounds you hear on these recordings from space.
Authentic photos made available courtesy of JPL and NASA.
Planet Profile
Mass (kg)............................................5.98 x 10^24
Diameter (km)........................................12756
Mean density (kg/m^3) ...............................5520
Escape velocity (m/sec)..............................11200
Average distance from Sun (AU).......................1
Rotation period (length of day) (in Earth days)......23.93
Revolution period (length of year) (in Earth days)...365.26
Obliquity (tilt of axis) (degrees)...................23.4
Orbit inclination (degrees)..........................0
Orbit eccentricity...................................0.017
Mean surface temperature (K).........................281
Maximum surface temperature (K)......................310
Visual geometric albedo..............................0.39
Highest point on surface.............................Mount Everest (over 8 km above sea-level)
Atmospheric components...............................78% nitrogen, 21% oxygen, 1% argon