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NASA, ESA capture comet collision with Sun

71 pointsby robmaceachernover 11 years ago

9 comments

teejaover 11 years ago
Another case of overly dramatic science-journalism. The title says &quot;comet collision&quot;. Worse yet just before the video it says &quot;The comet appears to explode upon impact but most likely only made it to within touching distance.&quot;<p>Touching distance? This writer clearly does not understand the subject at all. (Or else it&#x27;s a crappy translation from an ESA item in a foreign language.)
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astrowilliamover 11 years ago
I went into a little more detail about this event here, <a href="http://spaceindustrynews.com/30-meter-comet-hits-sun-at-same-time-as-coronal-mass-ejection-results-are-explosive-video/3899/" rel="nofollow">http:&#x2F;&#x2F;spaceindustrynews.com&#x2F;30-meter-comet-hits-sun-at-same...</a><p>Basically this sungrazing comet disappears into the sun and the CME happened at the same time. Though it looks like the comet created the CME, it in fact did not.<p>Very cool to see though!
joshuaheardover 11 years ago
Sorry, it&#x27;s not worth watching a 30-second commercial for a 15-second video.
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monsterixover 11 years ago
I think this is second or third such video of a heavenly body colliding with the sun that I have seen. I am a bit curious why the impact from one side of the sun (which is diametrically huge in comparison to the incoming projectile) pushed out a large flare or material on the other side of it?<p>Is sun just a ball of <i>liquid+gases+plasma</i> or there is a hard solid core in the middle of it? For if there was a solid core at all, or even a molten inelastic core, then perhaps the emission on the far side wouldn&#x27;t have been this big. To me, the the ejecta on the other side is almost equal to the splash on the side the comet hit.<p>Any explanations?
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serfover 11 years ago
the headline made me imagine a comet going through a Sun Microsystems building.
dhughesover 11 years ago
Is that Saturn in the upper left? I thought it was an icon or some artificial marking it&#x27;s so stereotypically Saturn shaped I didn&#x27;t think it was really Saturn.
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Nuxover 11 years ago
Spectacular! Looking forward to see comet Ison!
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Canadaover 11 years ago
There&#x27;s a group claiming comets are solid rock and their tails are electrical in nature: <a href="https://www.youtube.com/watch?v=wn_HqbMmn-4&amp;list=FLvHqXK_Hz79tjqRosK4tWYA" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=wn_HqbMmn-4&amp;list=FLvHqXK_Hz7...</a><p>The video is certainly interesting. Here&#x27;s a longer one: <a href="https://www.youtube.com/watch?v=34wtt2EUToo&amp;feature=c4-overview&amp;list=UUvHqXK_Hz79tjqRosK4tWYA" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=34wtt2EUToo&amp;feature=c4-overv...</a><p>(I&#x27;m no expert on this topic, I don&#x27;t feel I can judge these claims one way or the other)
brownbatover 11 years ago
Look at the light coming off the far side of the sun post-impact.<p>It&#x27;s almost unbelievable how an object &quot;tens of meters&quot; in diameter can affect an object nearly 1.4 Billion meters in diameter.<p>Just startling.<p>(Note, comets average 20k mph, so we&#x27;re still talking maybe 2&#x2F;1000th&#x27;s of a percent of c, right? It&#x27;s not like it&#x27;s a relativistic bomb or anything... yet billions of meters away, a light burst nearly instantaneous upon impact.)
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