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	<title>ciencia: comentarios [3855852]</title>
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	<pubDate>Sun, 17 Sep 2023 10:29:52 +0000</pubDate>
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		<meneame:comment_id>39285509</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>9</meneame:order>
		<meneame:user>Hombre_de_Estado</meneame:user>
		<meneame:votes>2</meneame:votes>
		<meneame:karma>35</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#9 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c09#c-9</link>
		<pubDate>Sun, 17 Sep 2023 10:29:52 +0000</pubDate>
		<dc:creator>Hombre_de_Estado</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c09#c-9</guid>
		<description><![CDATA[<p><a class="tooltip c:3855852-7" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c07#c-7" rel="nofollow">#7</a> Muchas gracías, miré un poco en internet, y parece que la explicación va por esa linea, por ejemplo:<br />
<br />
- <a href="https://earthsky.org/space/supersonic-stars-reveal-milky-ways-heart/" title="earthsky.org/space/supersonic-stars-reveal-milky-ways-heart/" rel="nofollow">earthsky.org/space/supersonic-stars-reveal-milky-ways-heart/</a><br />
---&#62; <i>&#34;And what is that speed? One of the researchers, Idan Ginsburg of Harvard, said in an email to EarthSky:<br />
Let me explain what <b>supersonic</b> means in this context. The galactic center is more dense and also much hotter than most of the ‘space’ in the Milky Way. This raises the speed of sound. So although on Earth the speed of sound is about 340 m/s at sea level, at the galactic center it is much larger. There, the speed of sound is in fact a few hundred kilometers per second. It’s roughly larger by a factor of 1,000!<br />
So, when we’re talking about <b>supersonic</b> stars in the galactic center, we’re talking about stars that are moving thousands of kilometers per second. This is equivalent to millions of miles per hour.&#34;</i><br />
<br />
- <a href="https://en.wikipedia.org/wiki/Interstellar_medium#Structures" title="en.wikipedia.org/wiki/Interstellar_medium#Structures" rel="nofollow">en.wikipedia.org/wiki/Interstellar_medium#Structures</a><br />
--&#62; <i>&#34;Astronomers describe the ISM as turbulent, meaning that the gas has quasi-random motions coherent over a large range of spatial scales. Unlike normal turbulence, in which the fluid motions are highly subsonic, the bulk motions of the ISM are usually larger than the sound speed. <b>Supersonic</b> collisions between gas clouds cause shock waves which compress and heat the gas, increasing the sounds speed so that the flow is locally subsonic; thus <b>supersonic</b> turbulence has been described as 'a box of shocklets', and is inevitably associated with complex density and temperature structure. In the ISM this is further complicated by the magnetic field, which provides wave modes such as Alfvén waves which are often faster than pure sound waves: if turbulent speeds are <b>supersonic</b> but below the Alfvén wave speed, the behaviour is more like subsonic turbulence. &#34;</i></p><p>&#187;&nbsp;autor: <strong>Hombre_de_Estado</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285351</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>8</meneame:order>
		<meneame:user>--731452--</meneame:user>
		<meneame:votes>0</meneame:votes>
		<meneame:karma>9</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#8 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c08#c-8</link>
		<pubDate>Sun, 17 Sep 2023 10:06:22 +0000</pubDate>
		<dc:creator>--731452--</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c08#c-8</guid>
		<description><![CDATA[<p>La velocidad supersónica es muy lenta para lo que es el espacio. A lo mejor no para el periodista.</p><p>&#187;&nbsp;autor: <strong>--731452--</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285288</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>7</meneame:order>
		<meneame:user>Nadieenespecial</meneame:user>
		<meneame:votes>2</meneame:votes>
		<meneame:karma>40</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#7 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c07#c-7</link>
		<pubDate>Sun, 17 Sep 2023 09:56:23 +0000</pubDate>
		<dc:creator>Nadieenespecial</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c07#c-7</guid>
		<description><![CDATA[<p><a class="tooltip c:3855852-2" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c02#c-2" rel="nofollow">#2</a>  <a class="tooltip c:3855852-4" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c04#c-4" rel="nofollow">#4</a> El espacio no esta vació como tal, mucho menos cerca de las estrellas, y tiene algunos fenómenos que están relacionados con la velocidad del sonido que tienen gases a esas densidades tan bajas<br />
Para que me entendáis, la tierra esta dentro de la &#34;atmósfera&#34; del sol, la heliosfera, y el movimiento del plasma crea &#34;ondas de sonido&#34;<br />
No puedo explicar mucho mas por que esto lo estudie hace unos cuantos años es bastante complicado y ahora mismo no me acuerdo de mucho mas</p><p>&#187;&nbsp;autor: <strong>Nadieenespecial</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285144</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>6</meneame:order>
		<meneame:user>levante</meneame:user>
		<meneame:votes>1</meneame:votes>
		<meneame:karma>19</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#6 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c06#c-6</link>
		<pubDate>Sun, 17 Sep 2023 09:33:58 +0000</pubDate>
		<dc:creator>levante</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c06#c-6</guid>
		<description><![CDATA[<p><a class="tooltip c:3855852-4" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c04#c-4" rel="nofollow">#4</a> Yo también lo miré y solo me ha confundido más.</p><p>&#187;&nbsp;autor: <strong>levante</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285098</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>5</meneame:order>
		<meneame:user>Sacapuntas</meneame:user>
		<meneame:votes>1</meneame:votes>
		<meneame:karma>16</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#5 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c05#c-5</link>
		<pubDate>Sun, 17 Sep 2023 09:26:18 +0000</pubDate>
		<dc:creator>Sacapuntas</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c05#c-5</guid>
		<description><![CDATA[<p><a class="tooltip c:3855852-4" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c04#c-4" rel="nofollow">#4</a> ¡Si es supersónico es sensacional!</p><p>&#187;&nbsp;autor: <strong>Sacapuntas</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285088</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>4</meneame:order>
		<meneame:user>Hombre_de_Estado</meneame:user>
		<meneame:votes>4</meneame:votes>
		<meneame:karma>61</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#4 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c04#c-4</link>
		<pubDate>Sun, 17 Sep 2023 09:24:53 +0000</pubDate>
		<dc:creator>Hombre_de_Estado</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c04#c-4</guid>
		<description><![CDATA[<p><a class="tooltip c:3855852-2" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c02#c-2" rel="nofollow">#2</a> <a class="tooltip c:3855852-3" href="https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c03#c-3" rel="nofollow">#3</a> A mí también me sorprendió lo de &#34;supersónico&#34;, pero tanto Space.com como sobre todo la página oficial del Webb lo usan:<br />
- James Webb: <i>&#34;NASA's Webb Snaps <b>Supersonic</b> Outflow of Young Star&#34;</i>: <a href="https://webbtelescope.org/contents/news-releases/2023/news-2023-141" title="webbtelescope.org/contents/news-releases/2023/news-2023-141" rel="nofollow">webbtelescope.org/contents/news-releases/2023/news-2023-141</a><br />
- Space.com: <i>&#34;Stunning James Webb Space Telescope image shows young star blasting <b>supersonic</b> jets&#34;:</i> <a href="https://www.space.com/supersonic-jets-young-star-space-james-webb-space-telescope" title="www.space.com/supersonic-jets-young-star-space-james-webb-space-telescope" rel="nofollow">www.space.com/supersonic-jets-young-star-space-james-webb-space-telesc</a><br />
<br />
Quizá &#34;supersónico&#34; tenga un significado partícular en astronomía, pero ni idea. Si alguien puede ilustrarnos, gracias por adelantado.</p><p>&#187;&nbsp;autor: <strong>Hombre_de_Estado</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285070</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>3</meneame:order>
		<meneame:user>Sacapuntas</meneame:user>
		<meneame:votes>2</meneame:votes>
		<meneame:karma>24</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#3 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c03#c-3</link>
		<pubDate>Sun, 17 Sep 2023 09:22:26 +0000</pubDate>
		<dc:creator>Sacapuntas</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c03#c-3</guid>
		<description><![CDATA[<p>La velocidad supersónica en el espacio no es noticia. A 1700 m/s se mueve la Tierra alrededor del Sol. Seguro que es noticiable por otra cosa.</p><p>&#187;&nbsp;autor: <strong>Sacapuntas</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285057</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>2</meneame:order>
		<meneame:user>levante</meneame:user>
		<meneame:votes>3</meneame:votes>
		<meneame:karma>41</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#2 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c02#c-2</link>
		<pubDate>Sun, 17 Sep 2023 09:21:17 +0000</pubDate>
		<dc:creator>levante</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c02#c-2</guid>
		<description><![CDATA[<p>¿Supersónicos?</p><p>&#187;&nbsp;autor: <strong>levante</strong></p>]]></description>
	</item>

	<item>
		<meneame:comment_id>39285020</meneame:comment_id>
		<meneame:link_id>3855852</meneame:link_id>
		<meneame:order>1</meneame:order>
		<meneame:user>Hombre_de_Estado</meneame:user>
		<meneame:votes>2</meneame:votes>
		<meneame:karma>40</meneame:karma>
		<meneame:url>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros</meneame:url>
		<title>#1 El telescopio Webb ve una estrella que lanza brillantes chorros supersónicos</title>
		<link>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c01#c-1</link>
		<pubDate>Sun, 17 Sep 2023 09:17:13 +0000</pubDate>
		<dc:creator>Hombre_de_Estado</dc:creator>
		<guid>https://www.meneame.net/m/CIENCIA/telescopio-webb-ve-estrella-lanza-brillantes-chorros/c01#c-1</guid>
		<description><![CDATA[<p>Más info (dejo enlaces a otros notables Objetos Herbig–Haro, <b>el del envio es el HH 211</b>):<br />
- HH 211: Telescopio Webb (página oficial): <a href="https://webbtelescope.org/contents/news-releases/2023/news-2023-141" title="webbtelescope.org/contents/news-releases/2023/news-2023-141" rel="nofollow">webbtelescope.org/contents/news-releases/2023/news-2023-141</a><br />
- HH 211: Space.com: <a href="https://www.space.com/supersonic-jets-young-star-space-james-webb-space-telescope" title="www.space.com/supersonic-jets-young-star-space-james-webb-space-telescope" rel="nofollow">www.space.com/supersonic-jets-young-star-space-james-webb-space-telesc</a><br />
- HH 111: <a href="https://www.meneame.net/m/astronomia/hubble-captura-estrella-dispara-potente-chorro-energia-cosmos" title="www.meneame.net/m/astronomia/hubble-captura-estrella-dispara-potente-chorro-energia-cosmos" rel="nofollow">www.meneame.net/m/astronomia/hubble-captura-estrella-dispara-potente-c</a> , <a href="https://en.wikipedia.org/wiki/HH_111" title="en.wikipedia.org/wiki/HH_111" rel="nofollow">en.wikipedia.org/wiki/HH_111</a><br />
- HH 24: <a href="https://www.meneame.net/m/astronomia/herbig-haro-24-eng" title="www.meneame.net/m/astronomia/herbig-haro-24-eng" rel="nofollow">www.meneame.net/m/astronomia/herbig-haro-24-eng</a> , <a href="https://en.wikipedia.org/wiki/HH_24-26" title="en.wikipedia.org/wiki/HH_24-26" rel="nofollow">en.wikipedia.org/wiki/HH_24-26</a><br />
- HH 666: Telescopio Hubble (&#34;666&#34; siempre es un buen criterio <img data-src="https://cdn.mnmstatic.net/v_149/img/menemojis/36/grin.png" alt=":-D" title=":-D" width="18" height="18" src="https://cdn.mnmstatic.net/v_149/img/g.gif" class="emoji lazy" />): <a href="https://hubblesite.org/contents/media/videos/1026-Video.html?Topic=104-stars-and-nebulas" title="hubblesite.org/contents/media/videos/1026-Video.html?Topic=104-stars-and-nebulas" rel="nofollow">hubblesite.org/contents/media/videos/1026-Video.html?Topic=104-stars-a</a><br />
- 3 Wikis: <a href="https://en.wikipedia.org/wiki/Herbig–Haro_object" title="en.wikipedia.org/wiki/Herbig–Haro_object" rel="nofollow">en.wikipedia.org/wiki/Herbig–Haro_object</a> , <a href="https://en.wikipedia.org/wiki/Astrophysical_jet" title="en.wikipedia.org/wiki/Astrophysical_jet" rel="nofollow">en.wikipedia.org/wiki/Astrophysical_jet</a> , <a href="https://en.wikipedia.org/wiki/Star_formation" title="en.wikipedia.org/wiki/Star_formation" rel="nofollow">en.wikipedia.org/wiki/Star_formation</a><br />
- 1 Wikimedia: galería de imágenes de Objetos Herbig–Haro: <a href="https://commons.wikimedia.org/wiki/Category:Herbig–Haro_objects" title="commons.wikimedia.org/wiki/Category:Herbig–Haro_objects" rel="nofollow">commons.wikimedia.org/wiki/Category:Herbig–Haro_objects</a></p><p>&#187;&nbsp;autor: <strong>Hombre_de_Estado</strong></p>]]></description>
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