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#galaxycluster

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Daniel Pomarède<p>Portrait of a galaxy cluster</p><p>A massive, spacetime-warping cluster of galaxies, Abell 209, is the setting of today’s NASA/ESA Hubble Space Telescope Picture of the Week. </p><p>Credit: ESA/Hubble &amp; NASA, M. Postman, P. Kelly<br><a href="https://esahubble.org/images/potw2527a/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">esahubble.org/images/potw2527a/</span><span class="invisible"></span></a> </p><p><a href="https://mastodon.social/tags/Cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cosmology</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/Astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astrophysics</span></a> <a href="https://mastodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astrodon</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/galaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>galaxies</span></a> <a href="https://mastodon.social/tags/galaxycluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>galaxycluster</span></a> <a href="https://mastodon.social/tags/Hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hubble</span></a> <a href="https://mastodon.social/tags/HST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HST</span></a> <a href="https://mastodon.social/tags/Abell209" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Abell209</span></a> <a href="https://mastodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrophotography</span></a></p>
CosmicRami<p>Incredible new <a href="https://aus.social/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JWST</span></a> deep field (120 hours!) released by folks from ESA/NASA Webb teams. </p><p>Not only is nearly everything in this image a galaxy (the two spiky stars are not), but those curved arcs are images of galaxies beyond this cluster, which are projected and warped into our view thanks to the power of gravity! </p><p>It's called a gravitational lens. To visualise what's happening, take a look at this diagram.</p><p>There are distant galaxies that we can't normally see. There's also a galaxies between them and us, with lots of mass.</p><p>This mass warps space-time and bends the distant galaxy light towards us so we see them.</p><p>I am amazed. You should be amazed. This is a really epic image.</p><p>Galaxy image and alt-text credit: ESA/Webb, NASA &amp; CSA, H. Atek, M. Zamani (ESA/Webb) </p><p>Diagram credit: NASA, ESA &amp; L. Calçada</p><p><a href="https://aus.social/tags/Galaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Galaxies</span></a> <a href="https://aus.social/tags/GravitationalLensing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GravitationalLensing</span></a> <a href="https://aus.social/tags/GalaxyCluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GalaxyCluster</span></a> <a href="https://aus.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astrodon</span></a></p>
Daniel Fischer<p>The JWST Discovery of the Triply-imaged Type Ia "Supernova H0pe" and Observations of the <a href="https://scicomm.xyz/tags/GalaxyCluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GalaxyCluster</span></a> PLCK G165.7+67.0: <a href="https://arxiv.org/abs/2309.07326" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2309.07326</span><span class="invisible"></span></a> -&gt; JWST’s first triple-image supernova could save the Universe: <a href="https://bigthink.com/starts-with-a-bang/triple-lens-supernova-jwst/" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bigthink.com/starts-with-a-ban</span><span class="invisible">g/triple-lens-supernova-jwst/</span></a> - named <a href="https://scicomm.xyz/tags/Supernova" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Supernova</span></a> H0pe, it shows how <a href="https://scicomm.xyz/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JWST</span></a> plus <a href="https://scicomm.xyz/tags/GravitationalLensing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GravitationalLensing</span></a> can be used to solve the greatest puzzle facing astronomy today, the <a href="https://scicomm.xyz/tags/HubbleConstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HubbleConstant</span></a> tension.</p>
Daniel Fischer<p><a href="https://scicomm.xyz/tags/GravitationalLensing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GravitationalLensing</span></a> by the <a href="https://scicomm.xyz/tags/GalaxyCluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GalaxyCluster</span></a> SDSS J1226+2149, imaged by the <a href="https://scicomm.xyz/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JWST</span></a>'s NIRCAM from 1.2 bis 4.4 µm (particularly funny details): <a href="https://esawebb.org/images/potm2303a/" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="">esawebb.org/images/potm2303a/</span><span class="invisible"></span></a></p>
Reymond Aguinaldo<p>Two views of the galaxy cluster <a href="https://mastodon.social/tags/SMACS0723" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SMACS0723</span></a>—<a href="https://mastodon.social/tags/HubbleSpaceTelescope" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HubbleSpaceTelescope</span></a> on the left, <a href="https://mastodon.social/tags/JamesWebbSpaceTelescope" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JamesWebbSpaceTelescope</span></a> on the right. <a href="https://mastodon.social/tags/Hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hubble</span></a>’s image on the left shows many faint stars and galaxies, but the <a href="https://mastodon.social/tags/Webb" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Webb</span></a> image absolutely pops with light, revealing many hidden structures.</p><p>Hubble vs Webb: <a href="https://webb.nasa.gov/content/about/comparisonWebbVsHubble.html" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">webb.nasa.gov/content/about/co</span><span class="invisible">mparisonWebbVsHubble.html</span></a></p><p><a href="https://mastodon.social/tags/SpaceMastodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SpaceMastodon</span></a> <a href="https://mastodon.social/tags/Spacedon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Spacedon</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astrodon</span></a> <a href="https://mastodon.social/tags/ScienceMastodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ScienceMastodon</span></a> <a href="https://mastodon.social/tags/Sciencedon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Sciencedon</span></a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://mastodon.social/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JWST</span></a> <a href="https://mastodon.social/tags/HST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HST</span></a> <a href="https://mastodon.social/tags/Galaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Galaxies</span></a> <a href="https://mastodon.social/tags/GalaxyCluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GalaxyCluster</span></a></p>
Reymond Aguinaldo<p>This deep field, taken by <a href="https://mastodon.social/tags/Webb" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Webb</span></a>’s&nbsp;Near-Infrared Camera&nbsp;(NIRCam), is a composite made from images at different wavelengths, totalling 12.5 hours—achieving depths at infrared wavelengths beyond the <a href="https://mastodon.social/tags/HubbleSpaceTelescope" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HubbleSpaceTelescope</span></a>’s deepest fields, which took weeks.</p><p><a href="https://mastodon.social/tags/SpaceMastodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SpaceMastodon</span></a> <a href="https://mastodon.social/tags/Spacedon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Spacedon</span></a> <a href="https://mastodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Space</span></a> <a href="https://mastodon.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://mastodon.social/tags/Astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astrodon</span></a> <a href="https://mastodon.social/tags/ScienceMastodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ScienceMastodon</span></a> <a href="https://mastodon.social/tags/Sciencedon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Sciencedon</span></a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://mastodon.social/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JWST</span></a> <a href="https://mastodon.social/tags/Galaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Galaxies</span></a> <a href="https://mastodon.social/tags/GalaxyCluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GalaxyCluster</span></a></p>
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