<story><title>James Webb Space Telescope finds 2 of the most distant galaxies ever seen</title><url>https://www.space.com/james-webb-space-telescope-distant-galaxies</url></story><parent_chain><item><author>chongli</author><text>I think we can fight back against this to some extent. The most distant galaxies are fading due to increasing redshift. If we build larger and larger radio telescopes then we should be able to continue seeing them at longer wavelengths. If in a billion years we manage to colonize a substantial chunk of our galaxy then maybe we could build a gigantic radio telescope out of many small collectors spread out over several light years.</text></item><item><author>Ilverin</author><text>The expansion of the universe is accelerating. At some point, the number of galaxies in the visible universe will stop growing and the light received from distant galaxies will grow more and more redshifted. However, it&amp;#x27;s possible that the redshifting will accelerate faster than our technological ability to detect more and more redshifted light.</text></item><item><author>mihaitodor</author><text>I think it will take us a long time to map the entire “surface” of the visible sphere. Eventually, telescopes will be able to pick up some of the farthest galaxies, but there will always be one which might be a bit farther away, even if it won’t be orders of magnitude farther.</text></item><item><author>Civitello</author><text>Eventually, there will be a telescope to be the last to set the record for the most distant galaxy observed, because cosmic expansion will make it impossible to observe things so distant. I sometimes like to imagine what it will be like in the far future when you can only observe things a billion ly away, or a few million.</text></item><item><author>dylan604</author><text>I have a feeling that this headline will keep repeating itself as more imagery comes in and keeps getting analyzed. The first thing found from Webb that was further than Hubble gets &amp;quot;most distant ever seen&amp;quot;, then the next thing from Webb that was further will get &amp;quot;most distant ever seen&amp;quot;. We need to just have &amp;quot;most distant ever seen, yet&amp;quot; edit to them all</text></item></parent_chain><comment><author>calamari4065</author><text>The universe is likely infinite. The part we can observe is finite, and growing smaller.&lt;p&gt;Outside of our observable universe is probably just more universe. We&amp;#x27;re stuck in a bubble within that universe due to the speed of light and cosmic expansion. The expansion of the universe is accelerating and that expansion continually pushes more of the universe outside of our local bubble. Relative to our reference point, some parts of the universe are moving away faster than the speed of light.&lt;p&gt;Supposing you had some sort of mechanism to travel across the entire universe, when you get to what we on Earth would see as the &amp;#x27;edge&amp;#x27; of the observable universe, you could see past the boundary to another section of the universe as big as this one. If you could communicate back to earth, you&amp;#x27;d effectively increase the size of our observable universe by half.&lt;p&gt;But while we&amp;#x27;re still trapped by the speed of light, we can never see beyond the edge of the universe. An edge which grows closer and closer, faster and faster with every passing second.&lt;p&gt;No matter how big your sensor is, you can&amp;#x27;t detect photons that don&amp;#x27;t exist. Once an object passes beyond the boundary of our observable universe, it effectively ceases to exist for us. No photon from that object will ever reach us again.</text></comment>
<story><title>James Webb Space Telescope finds 2 of the most distant galaxies ever seen</title><url>https://www.space.com/james-webb-space-telescope-distant-galaxies</url></story><parent_chain><item><author>chongli</author><text>I think we can fight back against this to some extent. The most distant galaxies are fading due to increasing redshift. If we build larger and larger radio telescopes then we should be able to continue seeing them at longer wavelengths. If in a billion years we manage to colonize a substantial chunk of our galaxy then maybe we could build a gigantic radio telescope out of many small collectors spread out over several light years.</text></item><item><author>Ilverin</author><text>The expansion of the universe is accelerating. At some point, the number of galaxies in the visible universe will stop growing and the light received from distant galaxies will grow more and more redshifted. However, it&amp;#x27;s possible that the redshifting will accelerate faster than our technological ability to detect more and more redshifted light.</text></item><item><author>mihaitodor</author><text>I think it will take us a long time to map the entire “surface” of the visible sphere. Eventually, telescopes will be able to pick up some of the farthest galaxies, but there will always be one which might be a bit farther away, even if it won’t be orders of magnitude farther.</text></item><item><author>Civitello</author><text>Eventually, there will be a telescope to be the last to set the record for the most distant galaxy observed, because cosmic expansion will make it impossible to observe things so distant. I sometimes like to imagine what it will be like in the far future when you can only observe things a billion ly away, or a few million.</text></item><item><author>dylan604</author><text>I have a feeling that this headline will keep repeating itself as more imagery comes in and keeps getting analyzed. The first thing found from Webb that was further than Hubble gets &amp;quot;most distant ever seen&amp;quot;, then the next thing from Webb that was further will get &amp;quot;most distant ever seen&amp;quot;. We need to just have &amp;quot;most distant ever seen, yet&amp;quot; edit to them all</text></item></parent_chain><comment><author>bradgessler</author><text>&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.pbs.org&amp;#x2F;video&amp;#x2F;how-much-of-the-universe-can-humanity-ever-see-bboivw&amp;#x2F;&quot; rel=&quot;nofollow noreferrer&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.pbs.org&amp;#x2F;video&amp;#x2F;how-much-of-the-universe-can-human...&lt;/a&gt; does a good job explaining the theoretical limits of how much universe humans will be able to observe.&lt;p&gt;Based on today a knowledge of the universe, even if humans colonize the entire universe, you would eventually lose contact with humans in certain areas and therefore their knowledge.&lt;p&gt;I felt like humans were doomed after watching it, despite the vast scales discussed.</text></comment>