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 THE DOOM THAT COMES OUR WAY!!

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Caz
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PostSubject: THE DOOM THAT COMES OUR WAY!!   Wed Aug 12, 2009 1:55 pm

Timeline: Comet and asteroid impacts



I Have Put My Commets In Blue And Red To Show Clam And FEAR!!!

1. Yes It Goes This Far Back.......

4.5 billion years ago
A solar nebula condenses to form the planets, moons, asteroids and comets of our solar system. The planets' gravity propels comets outward to form the distant Oort cloud, and funnels most asteroids into a belt between Mars and Jupiter

3.8 billion years ago
The Late Heavy Bombardment: many massive impacts from debris left over after planet building, batter the Earth and Moon, and the inner planets, Mercury, Venus and Mars. The impacts are large enough to keep much of their surfaces molten

65 million years ago
An object - probably an asteroid about 10 kilometres across - crashes into what is now Mexico's Yucatan peninsula, forming a 300-km-wide crater called Chixculub. The resulting global hail of red-hot impact debris sets fires everywhere. The soot and dust of the impact and fires creates an "impact winter" lasting for many years, leading to the death of all dinosaurs and many other forms of life

50,000 years ago
A 50-metre-wide, nickel-iron meteorite slams into what is now Arizona, forming Meteor Crater - Earth's best-preserved large impact crater, 4 km across

613 BC
China's Annals record a great comet, now thought to have been the first known sighting of Halley's Comet and perhaps the earliest record of any comet

2. Getting Closer.....

312 AD
Roman Emperor Constantine claims to see a vision of a cross in the sky, causing his conversion to Christianity. Some think this was a comet, others that it was the flash of a meteorite impact

1066
A widely seen, spectacular appearance of Halley's comet, is recorded on the Bayeux Tapestry, which depicts the Norman conquest of England

1577
Tycho Brahe measures the position of a great comet and compares it with sightings from other places on Earth, proving it is at least four times further away than the Moon

1705
Edmond Halley makes the first prediction of the reappearance of a comet, proving that they orbit the Sun

1801
The first asteroid, Ceres is discovered, by Italian astronomer Giovanni Piazza

1908
An airburst over Tunguska, Siberia, flattens trees over hundreds of square miles, and the boom is heard thousands of miles away. It is later thought to be a comet that exploded high in the atmosphere. The blast released 500 kilotons of energy - the equivalent of a hydrogen bomb

1960
Geologist Eugene Shoemaker proves that Meteor Crater, Arizona really was produced by an impact. It was the first impact crater identified on Earth

1979
Luis Alvarez and colleagues publish the first paper linking the final dinosaur extinction to a massive asteroid impact

1980
The Spacewatch survey begins, at the University of Arizona, led by Tom Gehrels. This is the first systematic search for asteroids that might impact the Earth

1990
The Chixculub impact crater in Mexico, now buried deep below ground, is finally identified and tied to the impact that killed the dinosaurs

1992
US Congress-appointed panel proposes Spaceguard program to search for all near-Earth asteroids larger than 1 kilometre across within 10 years

1993
Comet Shoemaker-Levy 9 discovered. Resembling a string of pearls, it is the first known discovery of a comet shattered by a gravitational encounter with Jupiter. The dozens of pieces of the comet crash into Jupiter over a few hours in 1994

3. As You See It Goes Down Hill From Here!!!

1995
The NEAT (Near-Earth Asteroid Tracking) project begins at an air-force tracking telescope in Hawaii. The rate of near-Earth asteroid (NEA) discovery increases more than tenfold......NEAR EARTH

1996
The first discovery is made of an asteroid with an orbit computed to have a possibility of striking Earth.....COULD IT HIT!!!????

1999
The Torino Scale is published by astronomer Rick Binzel. It is an attempt to quell public fears about future near-Earth asteroid discoveries that have some small chance of striking Earth. It classifies all possible impacts on a scale with zero being no risk and 10 being virtually certain to cause global devastation.........................THEY MADE A SCALE!!

2001
An asteroid is discovered that still has highest known possibility of impact. 1950 DA has 1-in-600 chance of striking Earth in 2880...OH NO A DATE!!!

2002
It is found that the Yarkovsky Effect can significantly alter asteroid orbits and therefore could be used to move one out of harm's way, just by spray-painting it white. The Yarkovsky Effect causes thrust, because of imbalances between solar energy reaching the object and heat being radiated out....
Trying To Make Us Feel Better!

2004
NASA's Stardust spacecraft flies by Comet Wild 2 on 2 January, gathering comet dust and taking close-up pictures......
Lab Stuff

highest number yet on Torino Scale (see above) reported in December 2004 - is 4. The asteroid now called Apophis improved orbital calculations have reduced the threat level 1....Theres That SCALE Again.....

NASA's Deep Impact spacecraft becomes first object deliberately sent into collision with a comet, called Tempel 1, on 4 July...Oh NO THEIR MAKING IT ANGRY!...WHY?

For All Of This Info Vist The Link Here -------> The DOOM That Will DISTORY us!!!

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Ada
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PostSubject: Re: THE DOOM THAT COMES OUR WAY!!   Fri Aug 14, 2009 1:41 am

But chep..... what about Project Lucifer that will be our ultimate doom? turning this into a BINARY SYSTEM (possibly more then that if ALL the gas giants go up)

You can all kiss Night-time goodbye!

And all those people who love Sunbeds........well, you got the sun.


Doom....DOOM!
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Caz
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PostSubject: Re: THE DOOM THAT COMES OUR WAY!!   Fri Aug 14, 2009 9:12 am

oh well you think thats all there up to look at this!!!

Earth could seed Titan with life





Terrestrial rocks blown into space by asteroid impacts on Earth could have taken life to Saturn's moon Titan, scientists have announced.
Earth microbes in these meteorites could have seeded the organic-rich world with life, researchers believe.
They think the impact on Earth that killed off the dinosaurs could have ejected enough material for some to reach far-off moons such as Titan. ( I.E - Dont worry about making Earth a trush Can we can move to Titan When The Gas's That Would Kill Us Are Gone)

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Gaudenzio
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PostSubject: Re: THE DOOM THAT COMES OUR WAY!!   Fri Aug 14, 2009 3:20 pm

A few small problems with the titan immigration plan,

Project Lucifer would render it uninhabitable,
Theres no Van allen belt to protect you there (that we know of),
How would you live for the amount of time it would take to get there?,
you would need a spaceship with enough shielding to protect you from cosmic rays in space,
What would you eat once you got there?

What about the Titanians don't they get a say in it?

:[Member of the Titan for the Titanians party]:
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lydiasquid
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PostSubject: Re: THE DOOM THAT COMES OUR WAY!!   Tue Sep 01, 2009 5:48 am

anyone want refreshments??

[lid smiles sweetly]

xxx
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