Messier 8
science·@jonathanxvi·
0.000 HBDMessier 8
<html> <p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/VST_images_the_Lagoon_Nebula.jpg/1024px-VST_images_the_Lagoon_Nebula.jpg" width="1024" height="700"/></p> <p> <em>M8, the Lagoon Nebula. Image source: </em><a href="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/VST_images_the_Lagoon_Nebula.jpg/1024px-VST_images_the_Lagoon_Nebula.jpg"><em>(1)</em></a></p> <p> As far as stellar objects are concerned, probably the most spectacular to observe are galaxies and nebulae. In the Messier catalog they do not abound, since most objects are stellar clusters, but Messier 8 is different.</p> <p> In the eighteenth century, the cosmic tourist Charles Messier cataloged this glowing nebula as Messier 8. Today's astronomers know it as the Lagoon Nebula (NGC6523), it is a beautiful stellar nursery about 5,000 light years away from us and we can find it in the <a href="https://en.wikipedia.org/wiki/Sagittarius_(constellation)">constellation Sagittarius</a>, in the direction of the center of our galaxy . </p> <p> It got its name by the form of the dark line that crosses through its center. In Messier 8 is found many dark globules that can be seen throughout the nebula, these globules called "Bok globules" will one day become condensed in the form of stars, such as those forming the open cluster of young stars on the same nebula. </p> <p> Messier 8 is a gigantic interstellar cloud, specifically a broadcast nebula; this is how we call a region of ionized gas that emits light in different colors at wavelengths that are not always visible to the human eye. The energy source of the ionization of the high energy photons emitted by a nearby hot star, which causes it to shine. The colors we see in the pictures depend on the chemical composition and how much is being ionized. Most nebulae contain abundant amounts of hydrogen (which does not require much energy to ionize) and appears in red. The more energy available from more powerful stars, the more elements will be ionized, giving rise to green and blue tones.</p> <p> More details here: <a href="https://en.wikipedia.org/wiki/Lagoon_Nebula">Messier 8</a></p> <p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Lagoon_Nebula_%28ESO%29.jpg/1024px-Lagoon_Nebula_%28ESO%29.jpg" width="1024" height="686"/></p> <p><em> The Lagoon Nebula. Image credit: </em><a href="https://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Lagoon_Nebula_%28ESO%29.jpg/1024px-Lagoon_Nebula_%28ESO%29.jpg"><em>ESO</em></a></p> <p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/40/Lagoon_nebula_SALT.jpg/1024px-Lagoon_nebula_SALT.jpg" width="1024" height="799"/></p> <p> <em>Central region of the Lagoon Nebula, showing the Hourglass Nebula to the right. Image source: </em><a href="https://upload.wikimedia.org/wikipedia/commons/thumb/4/40/Lagoon_nebula_SALT.jpg/1024px-Lagoon_nebula_SALT.jpg"><em>(2)</em></a></p> <p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Hourglass_Nebula_region_of_Messier_8_%28M8%29_in_the_32_inch_Schulman_telescope_on_Mt._Lemmon%2C_AZ.jpg/800px-Hourglass_Nebula_region_of_Messier_8_%28M8%29_in_the_32_inch_Schulman_telescope_on_Mt._Lemmon%2C_AZ.jpg" width="800" height="789"/></p> <p> <em>Hourglass Nebula region of Messier 8 (M8) in the 32 inch Schulman telescope on Mt. Lemmon, AZ. Image source: </em><a href="https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Hourglass_Nebula_region_of_Messier_8_%28M8%29_in_the_32_inch_Schulman_telescope_on_Mt._Lemmon%2C_AZ.jpg/800px-Hourglass_Nebula_region_of_Messier_8_%28M8%29_in_the_32_inch_Schulman_telescope_on_Mt._Lemmon%2C_AZ.jpg"><em>(3)</em></a></p> <p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/M8_Lagoon_Nebula_from_the_Mount_Lemmon_SkyCenter_Schulman_Telescope_courtesy_Adam_Block.jpg/1024px-M8_Lagoon_Nebula_from_the_Mount_Lemmon_SkyCenter_Schulman_Telescope_courtesy_Adam_Block.jpg" width="1024" height="778"/></p> <p> <em>Messier 8 (M8) in the 32 inch Schulman telescope on Mt. Lemmon, AZ. Image source: </em><a href="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/M8_Lagoon_Nebula_from_the_Mount_Lemmon_SkyCenter_Schulman_Telescope_courtesy_Adam_Block.jpg/1024px-M8_Lagoon_Nebula_from_the_Mount_Lemmon_SkyCenter_Schulman_Telescope_courtesy_Adam_Block.jpg"><em>(4)</em></a></p> <p><br></p> <p><em><iframe width="560" height="315" src="https://www.youtube.com/embed/fiqxVLEH7t4" frameborder="0" allowfullscreen></iframe></em></p> <p> <a href="https://www.youtube.com/channel/UCllDaJE5yvO0PbjqvIn3iCw">HubbleESA</a> </p> <p><br></p> <p><img src="https://s4.postimg.org/h9sxo6s5p/voto.gif" width="1277" height="240"/></p> </html>
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