Currently on the sun. An updated more detailed page of my notes on this broadcast:<br /><br />The sun for 5 billion years, constantly changing. <br /><br />Beautiful pictures.<br /><br />The power of our sun – if we can control those forces, we could unlock the power of stars and of our sun.<br /><br />Big Bang born in an instant13 billion years ago, expanding at the speed of light.<br /><br />100 billion galaxies.<br /><br />Toward the edge of one of the spiral arms is the sun. <br /><br />Venus and Mercury are scorched. Mars, etc,. cold chill of space.<br /><br />Earth right in the middle – just right – goldilocks planet – life has flourished.<br /><br />Sun sustains every plant and animal. {“nearly all”)<br /><br />Without the sun the earth would be a lifeless ball of rock (not true – extremophiles)<br /><br />.<br /><br />Dr. Helen Mason, Cambridge University – sun always changing.<br /><br />Solar telescope – surface bubbles like ball of oatmeal, changes every second. Each bubble is a thousand miles across.<br /><br />6,000 degrees C, could vaporize rock.<br /><br />Periodic explosions on surface – huge!<br /><br />Inside the sun – probing heart of sun. <br /><br />How powerful? Hershcl figured power of sun a billion, billion, billion watts. <br /><br />How does sun produce its power. If sun was made of coal – it would burn itself out in a few thousand years – widely believed that earth was only a few thousand years old.<br /><br />Dr. David Alexander … measuring power of the sun.<br /><br />Herschell calculated power to melt ice for basic properties of sun. A billion, billion, billion watts – close to a few percent of actual energy!<br /><br />Single second of sun’s energy could suppy earth’s energy needs for a million years.<br /><br />200 years ago a coal fired sun was tenable – earth believed to be only a few thousand years old.<br /><br />Now we know better – geologic history evidence – I agree earth is at least a billion years old. [my note: More recent dates are less reliable due to the