<story><title>The Webb Telescope further deepens the Hubble tension controversy in cosmology</title><url>https://www.quantamagazine.org/the-webb-telescope-further-deepens-the-biggest-controversy-in-cosmology-20240813/</url></story><parent_chain></parent_chain><comment><author>refibrillator</author><text>If you’re interested in learning more about the rich human history and ingenuity underpinning the Hubble “constant”, please do yourself a favor and scroll through The Cosmic Distance Ladder by Terence Tao of UCLA:
&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;terrytao.wordpress.com&amp;#x2F;wp-content&amp;#x2F;uploads&amp;#x2F;2010&amp;#x2F;10&amp;#x2F;cosmic-distance-ladder.pdf&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;terrytao.wordpress.com&amp;#x2F;wp-content&amp;#x2F;uploads&amp;#x2F;2010&amp;#x2F;10&amp;#x2F;co...&lt;/a&gt;&lt;p&gt;The slides are delightfully visual and comprehensive yet terse, walking you up the rungs of the cosmic ladder from the Earth through the moon, sun, and beyond. I can almost guarantee you’ll learn something new and fascinating.</text></comment>
<story><title>The Webb Telescope further deepens the Hubble tension controversy in cosmology</title><url>https://www.quantamagazine.org/the-webb-telescope-further-deepens-the-biggest-controversy-in-cosmology-20240813/</url></story><parent_chain></parent_chain><comment><author>grishka</author><text>What if the universe doesn&amp;#x27;t expand at all? What if we&amp;#x27;re completely wrong and redshift is caused by something else entirely, like some yet-undiscovered phenomenon that occurs to spacetime or electromagnetic waves? How can we be so sure it&amp;#x27;s space that&amp;#x27;s expanding, not time?&lt;p&gt;The more I read about this, the more it feels like phlogiston theory[1]. Works great for describing observations at first, but as more observations are made, some contradict the theory, so exceptions are made for these cases (phlogiston must have negative mass sometimes&amp;#x2F;there must be extra matter or energy for galaxies to spin as fast as they do), and then finally someone discovers something (oxygen&amp;#x2F;???) that explains all observations much simpler and requires no weird exceptions.&lt;p&gt;[1] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;Phlogiston_theory&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;Phlogiston_theory&lt;/a&gt;</text></comment>