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Nasa News December 21 2012 Blackout

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BBC Asteroid Impact Simulation End Of The World Predictions

A huge asteroid with a diameter of 500 Kilometer is going to impact on Earth! Destination: Pacific Ocean. The asteroid impact peels 10 kilometers crust off the surface of Earth. The resulting shockwave travels at hypersonic speed. The debris from the impact is blasted to the lower orbit of Earth, and they returns to destroy everything on the planet. The firestorm created by the asteroid impact encircles the Earth,

vaporizing everything in our world. Within 24 hours of asteroid impact, the entire Earth will be uninhabitable. The researchers have found that this scenario has happened 6 times in Earth's history.

NASA December 21 2012 Just Another Day 720p

The issue with December 21, 2012 and the predicteddisasters that some folks think will come, probably started with the socalled end ofthe Mayan calendar. Their calendar does not end on December 21, 2012. It's just theend of the cycle and the beginning of a new one. It's just like on December 31st, ourcalendar comes to an end but a new calendar for the next year begins on January 1st. Niburu is supposed to be a planet that'sfour times the size of the Earth. It's going to get very close to the Earth and cause allkinds of disasters. So this enormous planet is supposed to be coming toward Earth, butif it were, we would've seen it long ago,

and if it were invisible somehow, we would'veseen the effects of this planet on neighboring planets. Thousands of astronomers who scan the nightskies on a daily basis have not seen this. And then there's folks who think that NASAastronomers are actually hiding this information so as to prevent panic from the populous. Can you imagine thousands of astronomers whoobserve the skies on a nightly basis keeping the same secret from the public for severalyearsé Some folks think there's going to be a solarstorm associated with December 21st of 2012.

Now, solar storms do exist. The sun's activitygoes through a cycle that reaches a maximum every eleven years. The next solar maximumwhen you might expect enhanced solar activity will take place actually in May of 2013. It'ssupposed to be fairly mild solar activity maximum and there's no evidence that there'sgoing to be any solar storms. And then we have planetary alignments. There'sa planetary alignment. The sun, the Earth and some of the planets are aligned and thisis going to cause some tidal effects on the Earth that's going to be catastrophic. Well, first of all, there are no planetaryalignments in December of 2012 and even if

there were, there are no tidal effects onthe Earth as a result. The only two bodies in the solar system that can affect the Earth'stides are the moon, which is very close, and the sun, which is massive and also fairy close.But the other planets have a negligible effect on the Earth. One of the myths for December 21, 2012 isthat the Earth's axes are going to somehow shift. The rotation axis can't shift becauseof the orbit of the moon around the Earth stabilizes it and doesn't allow it to shift. The magnetic field does shift from time totime but the last time it did was 740,000

years ago and it doesn't do that sort of ashift but every half million years or so. But there's no evidence that's going tohappen in December and even if it did shift, it's not going to cause a problem on theEarth apart from the fact that we're going to have to recalibrate our compasses. Extraordinary claims require extraordinaryevidence. Since the beginning of recorded time, therehave been literally hundreds of thousands of predictions for the end of the world andwe're still here.

OSIRISREx Interview with Ellen Stofan

Finch: Thank you, I'm here with EllenStofan NASA's Chief Scientist. We're just outside of the Vehicle AssemblyBuilding and just a few miles away is OSIRISREx on the launch pad ready to head to the asteroidBennu to collect a sample and then return it back to Earth. Stofan, what can we learn about asteroidsthan can benefit us in learning about our solar systeméStofan: Asteroids are the primitive material left over from when the planets formed. So the Earth, us, this building, everythingaround us.

Asteroids are the key to what were those materialsthat everything that is around us what made. Now everything on the Earth has been processed,all this material has been processed and processed. Asteroids are the pristine material and weknow they contain really interesting things like the water, that is the water that originatedour oceans and all of the water here on Earth and they actually also contain organic moleculesthat help make us. Finch: And so why did NASA pick Bennu as anasteroid to study and what are the benefits of a sample return missioné Stofan: You know Bennu is what we call a carbonaceousasteroid.

Now carbonaceous asteroids are the ones wherewe know that they have a lot of water in them and, again, we think that water is the sourceof the water that is here on Earth and we know that they have organic molecules on them. In fact, some of the letters in our DNA, thatmake up our DNA those molecules have been found in carbonaceous meteorites. So Bennu could hold keys not just to the originsof water on Earth but to the origins of life on Earth and we are particularly interestedin that type of asteroid. Now, when you send a spacecraft to eithera planet or an asteroid, you take along instruments

and you do the best you can characterizingthe material but you have to realize that when we shrink a scientific instrument tofit down onto a spacecraft it becomes a little less capable. If we can actual bring those rocks back hereto Earth, we can analyze them with the instruments that fill a room basically. We get much more precise and better informationso scientist and, especially, geologists like me, we like to get those rocks back here onEarth where we can do really amazing science with them that we just can't do remotely.

Finch: And now NASA is planning to do an AsteroidRedirect Mission and then eventually a journey to Mars. How does this mission help that goalé Stofan: You know because small bodies arepotentially really interesting in the future for resources, they are really interestingfor water, and, of course, we are concerned about them from a planetary hazards pointof view. Asteroids have hit this planet in the pastand they will hit us again at some point in the future.

The Asteroid Redirect Mission tests technologylike solar electric propulsion that we are going to use to get cargo out to astronautswho will someday be out at Mars. We are also going to be testing techniquesthat will help us understand how we might in the future potentially deflect a hazardousasteroid. So it's helping us protect this planet andthe Asteroid Redirect Mission is going to help is to get us on our way to getting humansto Mars and OSIRISREx is really the first step. It's teaching us how do we get to a smallbody, how do we maneuver around it, how do

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