what are u talking about?
admit you need to study earth science and keep it moving with your insults about my brain.
moist little p*ssyclot who wants to say im ignorant.
like you
Deep Impact – What Would Have Happened if Asteroid YU-2005 Hit Earth?
By
Dr. Kaye · November 10, 2011 ·
6 Comments
12
1
1
0
Asteroid impact, by David A. Hardy, from astroart.org
Two months ago, a 6.5 ton NASA satellite called UARS fell to earth completely out of control.
NASA literally had no idea where it was going to splashdown, although they were able to say it would be “somewhere between latitude 57 north and 57 south, and over a 500-mile long swath.” That range covers Australia to Northern Canada. Some warning! People in Florida reported seeing pieces of it burn up in the atmosphere, yet it ended up coming down in the Pacific Ocean, causing no harm to anyone or anything. Check out this
animated computer model of the re-entry. Only one person has ever been hit by a falling piece of space junk – Lottie Williams, in 1997 was hit by a Pepsi-can sized piece of a Delta 2 booster rocket, which fluttered to earth and tapped her gently on the shoulder.
Satellites and pieces of junk hitting earth are one thing – asteroids and comets are a whole different story. Basically, the larger an object, the more potential it has to do serious damage to the earth.
Not just destroying some forests, or creating an impressive crater - I’m talking biblical, mass extinction, end of the world levels of damage.
The most commonly known significant (i.e. massive) impact event is probably the mass extinction at the end of the Tertiary period, called the K-T event (Cretaceous / Tertiary, thought to have been partially caused by a giant asteroid or comet impacting the earth in the vicinity of what is now the Yucatan peninsula of Mexico. This explanation was first offered in 1980 by a team of geologists led by father-and-son Luis and Walter Alvarez. The Alvarez Hypothesis, as it is now known, is one of the classic tales of scientific discovery.
The K-T Boundary sediment layer as seen in the Raton basin of New Mexico, from usgs.gov
The Alvarezes and their colleagues noticed a distinct layer of sediment that could be dated to 65.5 million years in age was found in rocks everywhere around the earth where rocks of that age were preserved. Not coincidentally, there were abundant fossils below this layer, and barely any above it (or, any large, complex organisms) – which led them to conclude that they were looking at the record of a mass extinction. Upon further study, they noticed that the unusual sediment layer also contained 30 to 130 times the amounts of a trace element iridium. This element is very rare on earth, but it happens to be quite abundant in asteroids.
All of these pieces could add up to only one conclusion – a giant asteroid smashed into the earth and was a major part of the cause for the extinction of >80% of the species living on earth in a period of a year to a few thousand years (an instant in the geologic record).
The only thing their theory was missing was a crater. Ten years after they put forth their theory, the location of impactor was discovered to be the
Chicxulub crater in the Gulf of Mexico.
Radar image of the bedrock beneath the ocean sediemts at the site of the Chicxulub crater in the Yucatan, from the Lunar and Planetary Institute.
This crater is 111 miles across and oval shaped, which matches that theorized as necessary by the Alvarez team. It’s not readily visible from the surface like the meteor crater in Arizona, because of the proximity to the ocean, the older age, and the thick vegetation, but it is easily seen in the seafloor via radar imagery.
How big of an asteroid would have been required to cause this big of a crater, and to wipe out more than 80% of the species living on the entire planet, including the dinosaurs? The answer is somewhat surprising – onl
y 6-9 miles across. Given that the earth has a diameter of ~7,900 miles, that’s pretty small for the havoc it wreaked.
Just what was that havoc? Bad, bad things. Global firestorms, intensified by much higher amounts of oxygen in the atmosphere. Earthquakes ripping apart the earth for days as it vibrated like a rung bell.
Volcanoes erupting everywhere, acid rain burning flesh and vegetation, vaporized seabed rocks and sulfuric gases blocking out the sunlight for years, and even megatsunamis, up to 2 miles (yes, you read that right) TWO MILES high. Just how much energy – well around 1 billion times the amount released by the nuclear bombs dropped on Japan.
So imagine an asteroid as large as Mexico hitting the earth.
Mexico is 761,600 sq miles (1.973 million km²)