Our planet's timeline written in one million year increments.
Includes notes from the author
http://earthdevelopslife.blogspot.com/
4,608,000,000 (Years ago.)
4,607,000,000 (Years ago.)
4,606,000,000 Inside the Milky Way, hundreds of new stars were about to shine.
4,605,000,000 Our sun was one of them. Nearby, a star went supernova.
4,604,000,000 The heavy metals and other elements, uranium included,
4,603,000,000 were created at the moment of the supernova's explosion.
4,602,000,000 This material was dispersed into the surrounding space.
4,601,000,000 Some impacted the sun, while other material found its way
4,600,000,000 into orbit around the sun and eventually added to or began
4,599,000,000 the formation of some of the planets. All the stars in the
4,598,000,000 cluster received material from this supernova. When the
4,597,000,000 supernova exploded, the planets that circled it were blown
4,596,000,000 apart. Life is common in the universe and life could be found
4,595,000,000 on these planets. Microbes attached to particles were
4,594,000,000 dispersed into space by the explosion.
4,593,000,000 The theory that simple forms of life travel in ejecta from
4,592,000,000 other worlds is called: lithopanspermia.
4,591,000,000 Panspermia is the theory that
4,590,000,000 radiation pressure from the stars blow microbes about like
4,589,000,000 tiny solar sails. These microbes have the ability to survive in a
4,588,000,000 cold vacuum by going into stasis. They reduce there chemical
4,587,000,000 interactions to zero while maintaining there biological
4,586,000,000 structure well enough to later thaw and multiply when
4,585,000,000 they find themselves in a sustaining environment.
4,584,000,000
4,583,000,000 Two planetoids, less than a thousand mile in diameter, orbit the
4,582,000,000 sun at about the same distance from the sun as the earth does
4,581,000,000 today. Comets, meteorites (some left over from the supernova),
4,580,000,000 and planetoids crash into other planets and planetoids adding
4,579,000,000 mass. At this time there are dozens of planets and planetoids
4,578,000,000 circling the sun. Many cross the orbits of others. They crash into
4,577,000,000 each other, adding mass, and become larger.
VVVVVVVVVVVVVVVVVVVVVVVVV
Scroll way way way down to the bottom
VVVVVVVVVVVVVVVVVVVVVVVVV
4,000,000 Humans and chimps diverged (Ardipithecus)
3,000,000 Lucy: bipedal, small brain, long arms, short legs.
2,000,000 Early man (stone tools)
1,000,000
0 All of human's written history has occurred
in the most recent 10,000 years, or 1% of
the time in this last million year increment.