• For the last hundred years and more, all prior scientific theories on the origin of life on earth have become abject failures.
  • The word games that are played are less meaningful than fantasy.
  • Now, they have rolled the dice one more time again.
  • The new hypothesis suggests that life on Earth originated at photosynthetically active porous structures made of zinc sulfide similar to deep-sea hydrothermal vents.  Yeah!  That’s the ticket to ride.  No need for an Event Originator when you have hot zinc sulfide bubbling up on the ocean floor.     
  • Warm-up 4/22/15 Take out your Study Guides!! Review for 10 minutes Target TEST TIME! ppt download
  • The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk and became a solar system consisting of a star with orbiting planets.
  • Formation of the Solar System The Solar Nebular
  • Formation and evolution of our Solar System:
  • The formation and evolution of the Solar System began about 4.57 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.  Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planetsmoonsasteroids, and other small Solar System bodies formed.   Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets.
  • The various planets are thought to have formed from the solar nebula, From the disc-shaped cloud of gas and dust leftover from the Sun’s formation.  When the terrestrial planets were forming, they remained immersed in a disk of gas and dust. The giant planets (JupiterSaturnUranus, and Neptune) formed further out, beyond the frost line; after between three and ten million years, the young Sun’s solar wind would have cleared away all the gas and dust in the protoplanetary disc, blowing it into interstellar space, thus ending the growth of the planets.
  • Collisions mainly governed the evolution of the asteroid belt after the Late Heavy Bombardment.