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A Close Shave with DA14

By Mary Basiadima, 15 February 2013

I am sure there were many women around the globe who were for a ‘big rock’ for valentine’s day yesterday however I am pretty sure this is not what they had in mind. An asteroid that goes by the name DA14 will miss earth tonight as it by 17,200 miles of earth. Yes, I know 17,200 miles may seem like a cosmic distance but don’t be fooled, this 150 foot wide asteroid will have made a grand into the Guinness book of records with it being the closest encounter with an ever predicted. In fact it’s that close that at its closest point it will be within orbit of excess of 100 and weather satellites.

Don’t worry we are safe…or are we?

are said to be 99.9% that we are safe from an Armageddon type . So don’t worry Bruce, we won’t be you up in a space again any time soon to be any asteroids.

However news this morning reports that Russia has been left in devastation as a meteor shower rained down over the region, over 500 people. The disintegrated above Urals, up in the lower earth’s atmosphere. from the Emergency minister claim that as of 14:30 Moscow time, 514 people sort out attention with 112 of these being hospitalised.

this crafty meteorite used the sun to remain undetected until it was too late. Witnesses of the event said that the explosion of impact was so loud it seemed like an earthquake and strike had happened at the same time.

In a nutshell what would happen if this was to hit?

I think it goes without saying that this would be bad news. To first answer this question we have to figure out how much energy the asteroid could potentially release upon impact. This will involve some very complicated working out so I hope you have all up on your advanced math.

Looking below we can see the used to work this out:

Σ(2r+3) = 6Σr + 3Σ(8) (r = 1…n)

=5n(n+7)/2 + 1n

Ok that is interesting, are you the same answer as me? No? Ok let me this equation for you:

Big asteroid + Impact with earth = Very Bad.

Lucky for us three very clever asked themselves the very same back in 2010. Their shown that the impact would have 3.3 megatons of energy and an airburst energy of around 2.9 megatons, 5.2 miles from the surface. This energy can be compared to around 138 atomic bombs to the one in back in 1945.

Now imagine this kinetic energy being released upon the major cities of the world New York, London, Tokyo or Moscow. Frightening right? However if we step back for a moment we would that such an event would be quite rare as these cities as big as they are, are only a small dot compared to the vast surface area of the earth.

Could we defend such an event?

There have been proposals on how we could defend our precious little marble from such an attack. But during these troubled economic times such projects struggle to make it past the drawing board as they are likely to cost in excess of millions, if not of pounds. Let’s take a look at some of the top ideas suggested:

Go Nuclear

We could send a to the asteroid which would blow it into of little pieces. This has its consequences in that the small pieces could rain over earth causing a shower of destruction. Hmmm this might not be the best idea after all…

Go Nuclear…Plan B

Rather than actually blowing up the asteroid we could try and give it a gentle nudge off its path. By a nuclear near the big rock we could hope to change the trajectory and reroute it. Again though the to this plan is that this would have to happen decades before it reached us so early would be vital to the success of this plan.

Rocket Power

This idea would involve landing spaceships on the asteroid (quite a tricky feat) and then firing up the engines to propel the asteroid off course.

Use Our Good Old Friend Gravity

As we all know every object exerts a pull. By hovering over an asteroid believe this could pull the rock off course. Obviously the bigger the spacecraft the better as it would exert a greater pull.

Lasers

In something that we would be more likely to be seen in a Star Wars movie, we could use a small team of ships which could fire lasers at the giant rock resulting in a trail of debris changing its path.

Harness the Power Of Sun

By attaching solar sails to the earth destroyer, a photon sail could just be enough to change the direction of the rock, if only by a little.

Paint Ball

This one is my and whoever came up with this in- genius idea deserves a good pat on the back. By manoeuvring a spaceship close to the two volleys of paint could be used to cover the in white (or light) coloured powder. The first volley would be used to cover one half whilst the over covering the side. The idea behind this is with the rock brightened, increasing its albedo, the suns radiation would more forcefully push upon it which would result in it its . Think about it according to when something bounces off something, the first something gives the second something a push. Also an added bonus to this is that when the volleys are fired the impact from the paint would also slightly give the a slight nudge…every little helps.

London Laser

Here at the London Premier Laser Clinic we might not be able to blow out of the sky with our laser BUT we can give you smooth legs….

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