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Carl Sagan’s Cosmos - Star Stuff

6:19 pm • 12 May 2012 • 5 notes

Always reblog Brian Cox quotes.

“Our story is the story of the universe. Every piece of everyone, of everything you love and everything you hate, of the thing you hold most precious, was assembled by the forces of nature in the first few minutes of the life of the universe, transformed in the hearts of the stars or created in their fiery deaths.

And when you die, those pieces will be returned to the universe in the endless cycle of death and rebirth. What a wonderful thing it is to be part of that universe. And what a story, what a majestic story.”

- Professor Brian Cox, Wonders of the Universe.

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4:36 pm • 7 May 2012 • 26,111 notes

Exactly That

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12:01 pm • 29 April 2012 • 828 notes

Sounds of Jupiter from NASA - Voyager: Sounds of the Cosmos

Fascinating recording of Jupiter sounds (electromagnetic “voices”) by NASA-Voyager. The complex interactions of charged electromagnetic particles from the solar wind , planetary magnetosphere etc. create vibration “soundscapes”. It sounds very interesting, even scary.
Jupiter is mostly composed of hydrogen and helium. The entire planet is made of gas, with no solid surface under the atmosphere. The pressures and temperatures deep in Jupiter are so high that gases form a gradual transition into liquids which are gradually compressed into a metallic “plasma” in which the molecules have been stripped of their outer electrons. The winds of Jupiter are a thousand metres per second relative to the rotating interior. Jupiter’s magnetic field is four thousand times stronger than Earth’s, and is tipped by 11° degrees of axis spin. This causes the magnetic field to wobble, which has a profound effect on trapped electronically charged particles. This plasma of charged particles is accelerated beyond the magnetosphere of Jupiter to speeds of tens of thousands of kilometres per second. It is these magnetic particle vibrations which generate some of the sound you hear on this recording.

(Source: youtube.com)

10:57 am • 26 April 2012 • 6 notes