ScienceCast: Record-Setting Asteroid Flyby

[@oker59]

I've been to MeteorCrater twice now; once when very young(like ten years) and then a few years ago at 35 or so; it's one of the great things you can do! Me and my sister also went to a cave next to the Grand Canyon(Arizona rocks like this); we were like, "where's all the stone spikes coming from the ceiling?" The guy said, oh, about fifty thousand years ago, an asteroid hit nearby causing all those things to fall and shatter all over the floor.

[@IstasPumaNevada]

They never said in the video that you could see this asteroid with the human eye. They said the brightness would be easy to detect with even modest telescopes, but that its speed would make it difficult to find/track.

[@krumplethemal8831]

Yesterday march 21st 2014 we just had another huge near miss. This one came within the earth and the moon. We are seeing a lot of these really close fly bys lately. Or either we are getting better at spotting them or there is an unusual amount of close fly bys.

[@MichaelGoforthMiguelLeo]

for a general audience, which this site is, use both metric and US units (miles, feet, inches and more)

[@computerdude65]

"This will Defiantly not hit Earth…” .. “The chances of it hitting earth are extremely remote” xD

[@GearheadOutlaw]

Interesting stuff you guys share... Was always fascinated about space and your channel is really fantastic. Keep up the good work

[@oker59]

I remember seeing a video that took a lot of data(probably radar) of asteroids passing by the Earth; the video showed asteroids coming from every angle; we're litteraly in a shooting gallery.

[@alain19644u]

I can't wait till Coco-Cola uses one of these asteriods as a billboard

[@SapaHollidaySaparonia]

Is it the same football field that was used to measure Comet Lovejoy? If so that explains how it has shrunk from 58m to less than 50

[@FreeGamesMAX]

"The chances of it hitting a SATELLITE(!!) are extremely remote,"

[@ledude114]

K=1/2mv^2. By solving this simple equation, which is 2.38488e+17*1/2=1/2 m (1.3e+8kg given this site:neo.jpl.nasa.gov/risk/2012da14)*v^2, the resulting speed is 4.3e+4 m/s. Considering the speed of the asteroid, which is 6.15km/s or 6.15e+3m/s, and solving the resulting composants (explosion speed in x and asteroid speed in y), we get an added angle of trajectory of 82 degrees. In fact, other factors are to be considered for a precise answer, but it is still obvious you're wrong.

[@pheniks0]

1. its likely to be made of stone = no pulling 2. (if it were iron) thats like shooting a bullet past a magnet and thinking the magnet will pull it towards it, its most likely to change its trajectory and maybe in a couple of years theres a chance of impact (so, lots of time to prepare), but not this time my friend, no worries

[@ledude114]

You're right about the blast (Didn't put my mind into the fact that there's no "blast" effect in vaccuum, which is the real use of a thermonuclear weapon). H bombs half the size of Tsar Bomba are somewhat "easy" to find or more to make. Oh and I agree with you, no H-bomb ever made could "vaporize" a 130 000 tons chunk of rock in vaccuum. Reflecting the radiations with a paraboloidal mirror would be the same as simply trying to "boil" it... useless. Anyway thanks, you put me on the right track,

[@bradforschner]

I'm looking forward to working with the radar on this assignment!

[@FreeGamesMAX]

And it was the same picture too!

[@Medusafern]

I read this morning that DA 14's closest proximity to us has been newly estimated at 14,000 miles rather than 17,200. A few thousand feet closer, cool. I wonder if it will induce seismic activity.

[@MrBlueSkyMrNight]

According to NASA: "So far, the Spaceguard effort has found and is tracking more than 5,200 near-Earth asteroids 330 feet or larger, leaving more than an estimated 15,000 still to discover. In addition, scientists estimate there are more than a million unknown smaller near-Earth asteroids that could cause damage if they were to impact Earth."

[@564Zombies]

Actually most of the water came from the late heavy bombardment when Jupiter and Saturn went into a 2-1 resonance causing Neptune and Uranus to switch places and causing there orbits to expand out thus there gravity started to effect the Kuiper Belt. Tens of thousands of comets with water on them were flung into the inner solar system. And they were quite large.

[@raymondjordan9682]

How do asteroids from the asteroid belt get jiggled lose from their orbits and become a possible lethal missile? One would think that they have been there a long time and any collision between individuals would have occurred a long time ago.

[@QUICKIRONS]

What she neglected to mention was the margin for error which is the same as their distance to Earth prediction. Who knows what will happen to the asteroids trijectory if it collides with 22,000 pieces of space junk. It doesn't take much to reset the course of a space object.

[@TheFilamom30]

Why isn't this vid about asteroid quake as described on t/NASA app?

[@CFB6855]

What a great opportunity to study an asteroid. I wish we were able to capture it, but we will capture the one in 2022.

[@dalriada842]

That could just as easily describe an erupting volcano, with lava flowing into the sea.

[@Saukko31]

Thanks for the awesome video!

[@ledude114]

So we take the Tsar Bomba, which is about 57MT of TNT. Which is 5.7e+4 kT of TNT, which is 2.38488e+17 J. If we consider that the detonation is close to the asteroid, then about half of the det. energy will transfer to the asteroid (considering that a blast is spherical and the detonation point is flat). Without considering rock fragmentation, the explosion's energy will transfer into kinetic energy. Then, (following in another comment)

[@BillPetersonShempp]

Seriously? For a very nominal fee professional voice-overs can (and do) make what is currently a dull and lack luster read something that actually prevent people from muting their audio. Especially one as significant as this one. Honestly, one has to admit that the person who did this read, though intentions may have been the purest, is a great cure for insomnia... something that NASA has always done though the years.

[@GRosa]

Never heard of geologic faults as the source of that event. Any references to support your "probably"?

[@IstasPumaNevada]

How do you get that number? 70% of the Earth's surface is covered in water, and an object of that size would only produce in the area of 6 megatons of energy upon collision with the earth; a significant amount of energy, but it wouldn't even produce a gust of wind at tropical storm force 50km/30 miles out. That's an area one half, of one thousandth, of one percent of the Earth's surface area.

[@xjunkxyrdxdog89]

Thunder1soldier if it hit water it would explode on impact, but cause no damage. If it hit land it would explode/burrow into the earth creating a crater.

[@limitlessenergy369]

Asteroid exploded before it hit yet researchers are still studying the clues to the impact. So which was it, an impact, or exploded in atmosphere? My guess? They still think it might have been Tesla.

[@MrRaschke92]

I was both excited and entertained at the same time.

[@Zlatnikmk]

I don't know why my post (from yesterday) was removed? Did I said something wrong or bed? Or, according to the rules of (your) democracy, I haven't right to ask such a questions? In this case I just had only three simple questions? 1. Is there a new measure units for size - a football field? 2. To which football field they are talking about - American's or European's? 3. Why Americans still used different units than those from SI System? I hope that you'll be more correct now!

[@ely1camb]

shame they couldn't of attach some thing to the rock and let it keep floating on :)

[@Dendynugrohoo]

hang on 2012 DA14? > Ison?

[@Apollo1011]

The narrator has a lovely voice.

[@NiallBradley]

You guys at NASA have not got a clue what is going on out there, do you? The 'closest fly-by ever' and just 12 hours beforehand you're totally blindsided by 'the impossible'.

[@luckyguy23451]

thanks for your video

[@mjb0072012]

Arizona crater is only 4500 years old. It was a pre civilization nuke from the early nuke wars, see the India Vedas writings.

[@Lorensbrow]

Thtas what she siad!

[@SapaHollidaySaparonia]

They say it was a meteorite travelling N to S and DN14 is travelling W to E so not related. Must be one of those synchronous events that the universe runs on

[@TheStockwell]

Nope. Just you. I saw it in the KZbin video, "Asteroid 2012 DA14 is coming for 6163karen; somebody tell her, okay?"

[@robertghouston]

I'm wondering if Jupiter, for example, could potentially alter the asteroid's path.

[@1MuchButteR1]

The percent that an asteroid would hit a civilian area is around 22%

[@Hakaze]

Please use the metric system when describing science.

[@serijoscha]

Thx for presentation

[@chyta0]

If an asteroid hits earth, the energy which is being released by the impact totally melts and cracks the asteroid to pieces. Just imagine how much energy there has to be if you ride a car with a speed of 20.000 km/h and block its movement to 0km/h in a split second. the damage on your car would be unimaginable. just the same with ur asteroid :p

[@watifistickmycokinit]

How did it manage to miss New York, I thought everything from space made a bee line for the big apple??

[@johnnyjoevazquez]

There are 26000 objects in known earth orbit I'm sure are at least one or two are in the path right?

[@XaHyMaH]

It seems today one of it's satellites exploded over Chelyabinsk. No casualties but many people were hit by shockwave and glass debris from broken windows.

[@avanakeks5328]

not so bad. ~thousand of injured people, >35mil dollars damage to the buildings.. Little shock) That meteor was about 15 meters in diameter, 7000 tonne weight.The speed was 18 km/s, explosion happens at 20 km high and it was around 300.000 tonnes of TNT power of the explosion (as NASA said). Background radiation in normal

[@belkacemedjek538]

thenks very much

[@CNHubNicktoons]

Well I think you just missed the meteor of the centery it passed Earth 20 minutes ago. :3

[@1GTX1]

Even NASA admited that mass of that meteor was around 10 000 tons

Bruce Willis was there :-) No, seriously - it was small asteroid too, but it fell down on Russia just coincidently in the same day like the closest approach of ateroid 2012 DA14...

[@LanceWinslow]

You know, I really like these videos.

[@MrTrigger22]

So they can do interviews live with the ISS but cant give some pics of the flyby?!

[@zyfigamer]

Beginning: "Talk about a close shave." -.- ... End: "That really was a close shave." *face palm* At least I have more appreciation now for MY crappy writing skills.

[@Mandoflash]

an annoying little pebble. I love the thinly veiled threatening tone of the voiceover.

[@digitalsketchguy]

If they can calculate it's closest distance, they haven't revealed where it would hit, should they get their calculations wrong. And if it was going to impact, would they really tell us? You would only know by the deployment of troops and emergency personnel and erratic trading behaviour. Thanks for the Disneyesque video!

[@cellofingers]

I'd rather it take out some satellites than hit Earth. A 50 mile blast zone today is fairly serious.

[@pheniks0]

this also aplies to the gravitational force its will change its trajectory, but not pull it to the earth

[@arnoldshyrokova-vinette2254]

Well done.

[@iustinianpascal6049]

how an asteroid with 150 feet large can have seismic activity ?

[@TheNamesJT]

I looking forward to comet ISON that's going to be amazing!! that's only if it doesn't disintegrate when it approaches the sun

[@secreto209]

Even if Asteroid 2012 DA14 was on a collision course with Earth, you wouldn't be told. It'd cause mass panic, but it's not so :D

[@thegermanprostitute]

What about the one that's got us in it's sights?

[@pheniks0]

imo it will, if this little planet in the orbital diagram is as the earth is located in real life (north is upwards), from around 18.00 - 21.00 (utc) to where it is, i have no idea :P (yet)

[@TheIbb1000]

good film, thank you

[@elgringo3743]

Look for this: Meteorite crater in Chelyabinsk - Кратер от метеорита в Челябинске

[@TomoHawKzZ]

A meteorite, totally unrelated to DA14 and a third it's size, exploded in the stratosphere above Russia injuring around a thousand people as well as shattering windows and tripping car alarms for miles.

[@todorinskiz]

depending about which football are you talking about ;)

[@AutoPsychotic]

Oh yay, it's story time with the kindergarten teacher again.

[@MaryJanis]

What constellations is it coming through?

[@Zlatnikmk]

Is there any new measure unit for size - football field? For which football field it is concerned? For American's or European's football (soccer) field? Why Americans still used different units than those from SI System?

[@BallazErving]

Since it was spotted in December 14?? this should of been an effect to the worlds going to end on December 21st like an advertisement (o.O)Y

[@SapaHollidaySaparonia]

earth to DA14 dustance is now 0.0011 on 16th Feb on orbit diagram is this closer than previously estimated?

[@SapaHollidaySaparonia]

There's a lot of junk floating up there - "almost" no chance it will bump into any of it :)

[@mikeisamovie]

...yeah, but: what ARE the odds of it hitting the earth, and where would the trajectory place it? and please use the metric system when describing science. make us think a little...

[@tototorak]

MEDIA , MEDIA, WE WERE PEACFUL WITHOUT LATEST MEDIA.

[@ActionFarter]

Im just wondering, if the egg heads over there in Nasa actually seen this coming and said nothing? I mean there are satellites that can Zoom down onto a fly.

[@8BoWZer8]

They've none about it since February last year, I don't see what your getting at...

[@charmianberry]

why would NASA want to waste money doing that?

[@goingfortheone1]

Scientists constantly revise what they say based on new unearthed evidence. It is a sign of credibility, not the other way around. A more suspect person is someone who never changes what they say no matter what.

[@cellofingers]

Did she say Feb 13th?

[@elgringo3743]

Meteorite crater in Chelyabinsk - Кратер от метеорита в Челябинске

[@undercover227]

wait so you can see it already?

[@nidhinr2721]

People are simply spreading rumors and creating panic

[@Lovestorock73]

any links to the path of the asteroid?

[@olafreinhardweyer]

There is a panic, there is a panic, people prepare! there is panic!!!! :D

[@toonygabe123]

February 15? that's my birthday! It's either nature's present to me.. or a natural upcoming desaster.

[@Riotboy1]

Love her voice.

[@MegaShane555]

just asking; what will happen if the asteroid hits earth?

[@radiomanolis]

Will we be able to see it...????

[@Izzatmashoori]

finally torres scored!!!!

[@AoM798]

Разве этот астероид не связан с происшествием в Челябинске?

[@leucippe]

I hope that we can see it from Aix en Provence....

[@MAKEITGROW72]

Okay.. let's say it's come, so is there some recent photos and if it does attack the Earth" so WHERE IS the impact zone!? Thx

[@SeanKimStyle]

I understand that this isn't going to hit the earth. But will our earth's gravitational pull get messed up or will it pull the asteroid closer to earth so the next time when it goes around again?

[@w0jwjohn680]

What is the frequency of the ping?

[@raphaelduprat]

football field?? GOOOOOOOOOOOOOOOOOOAAAAAAAAAAAAAALLLLLLLLLL!