Lingolol

Michael PorterMore in the "Don't trust search results" department - This isn't even AI-generated, it seems to be just a misconception on the part of the author.Okay - While searching for a rough estimate of the size of the observable universe at various ages, I found an excerpt from an Encyclopedia Britannica page (URL in the alt text) that sounded wrong - that the observable universe expands by one light year per year. I plugged some rough numbers into Wolfram Alpha and got a value of 6.7 ly. (I like Wolfram Alpha - it usually makes the right assumptions about what I'm looking for 👍🏻)The EB article also states that as time goes by, we will be able to see *more* of the universe as light eventually reaches us from farther objects. This is exactly wrong - as the universe expands, more and more objects will recede faster than the speed of light and we will see less, not more. (Not to mention that there's a hard limit on the time during which objects that could emit light actually existed)Am I missing something? I'm always wary of forgetting a factor of 2 or something in this kind of calculation...<a href="https://ottawa.place/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#Astronomy</a> <a href="https://ottawa.place/tags/Cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cosmology</a> <a href="https://ottawa.place/tags/HubbleConstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#HubbleConstant</a>

Benjamin Carr, Ph.D. 👨🏻‍💻🧬Turning the <a href="https://hachyderm.io/tags/Hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hubble</a> tension into a crisis: New measurement confirms <a href="https://hachyderm.io/tags/universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#universe</a> is expanding too fast for current models The universe is expanding faster than predicted by theoretical models, and faster than can be explained by our current understanding of <a href="https://hachyderm.io/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#physics</a>. They arrived at a value for the <a href="https://hachyderm.io/tags/HubbleConstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#HubbleConstant</a> of 76.5 kilometers per second per megaparsec which matches existing measurements, but not as our current understanding of physics predicts it. <a href="https://phys.org/news/2025-01-hubble-tension-crisis-universe-fast.html" rel="nofollow noopener" translate="no" target="_blank">https://phys.org/news/2025-01-hubble-tension-crisis-universe-fast.html</a>

Daniel PomarèdeHow fast is the Universe expanding? This astronomer took cosmology closer to an answerWendy Freedman is part of Nature’s 10, a list of people who shaped science in 2024.<a href="https://www.nature.com/articles/d41586-024-03899-w" rel="nofollow noopener" translate="no" target="_blank">https://www.nature.com/articles/d41586-024-03899-w</a><a href="https://mastodon.social/tags/Cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cosmology</a> <a href="https://mastodon.social/tags/HubbleTension" class="mention hashtag" rel="nofollow noopener" target="_blank">#HubbleTension</a> <a href="https://mastodon.social/tags/HubbleConstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#HubbleConstant</a> <a href="https://mastodon.social/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#Science</a> <a href="https://mastodon.social/tags/Nature" class="mention hashtag" rel="nofollow noopener" target="_blank">#Nature</a> <a href="https://mastodon.social/tags/astronomer" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomer</a> <a href="https://mastodon.social/tags/astronomi" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomi</a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrophysics</a> <a href="https://mastodon.social/tags/STEM" class="mention hashtag" rel="nofollow noopener" target="_blank">#STEM</a> <a href="https://mastodon.social/tags/WomeninSTEM" class="mention hashtag" rel="nofollow noopener" target="_blank">#WomeninSTEM</a> <a href="https://mastodon.social/tags/Womeninscience" class="mention hashtag" rel="nofollow noopener" target="_blank">#Womeninscience</a> <a href="https://mastodon.social/tags/Universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#Universe</a>

Benjamin Carr, Ph.D. 👨🏻‍💻🧬Study: <a href="https://hachyderm.io/tags/Astronomers" class="mention hashtag" rel="nofollow noopener" target="_blank">#Astronomers</a> have made new measurements of the <a href="https://hachyderm.io/tags/HubbleConstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#HubbleConstant</a>, a measure of how quickly the <a href="https://hachyderm.io/tags/Universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#Universe</a> is expanding, by combining data from the <a href="https://hachyderm.io/tags/Hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hubble</a> <a href="https://hachyderm.io/tags/Space" class="mention hashtag" rel="nofollow noopener" target="_blank">#Space</a> <a href="https://hachyderm.io/tags/Telescope" class="mention hashtag" rel="nofollow noopener" target="_blank">#Telescope</a> and the <a href="https://hachyderm.io/tags/JamesWebbSpaceTelescope" class="mention hashtag" rel="nofollow noopener" target="_blank">#JamesWebbSpaceTelescope</a>. Conflicting values for the Hubble Constant are NOT due to measurement error Something else is influencing the expansion rate of the Universe, value differs by about 10 percent! <a href="https://arstechnica.com/science/2024/03/latest-webb-space-telescope-data-confirms-hubbles-value-for-expansion-of-universe/" rel="nofollow noopener" translate="no" target="_blank">https://arstechnica.com/science/2024/03/latest-webb-space-telescope-data-confirms-hubbles-value-for-expansion-of-universe/</a>

Daniel Pomarède7️⃣7️⃣5️⃣0️⃣0️⃣0️⃣ views for Dr Becky Smethurst's video on the effect of Laniakea on Cosmology. Such a huge interest for such a niche subject; what a fantastic work is doing Dr. Becky!<a href="https://www.youtube.com/watch?v=-kTe0xRAU1w" rel="nofollow noopener" translate="no" target="_blank">https://www.youtube.com/watch?v=-kTe0xRAU1w</a><a href="https://mastodon.social/tags/laniakea" class="mention hashtag" rel="nofollow noopener" target="_blank">#laniakea</a> <a href="https://mastodon.social/tags/supercluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#supercluster</a> <a href="https://mastodon.social/tags/galaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#galaxies</a> <a href="https://mastodon.social/tags/universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#universe</a> <a href="https://mastodon.social/tags/hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubble</a> <a href="https://mastodon.social/tags/hubbleconstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubbleconstant</a> <a href="https://mastodon.social/tags/hubbletension" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubbletension</a> <a href="https://mastodon.social/tags/BeckySmethurst" class="mention hashtag" rel="nofollow noopener" target="_blank">#BeckySmethurst</a> <a href="https://mastodon.social/tags/cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#cosmology</a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomy</a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrophysics</a> <a href="https://mastodon.social/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#physics</a> <a href="https://mastodon.social/tags/gravitation" class="mention hashtag" rel="nofollow noopener" target="_blank">#gravitation</a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#space</a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#science</a> <a href="https://mastodon.social/tags/cosmos" class="mention hashtag" rel="nofollow noopener" target="_blank">#cosmos</a> <a href="https://mastodon.social/tags/map" class="mention hashtag" rel="nofollow noopener" target="_blank">#map</a> <a href="https://mastodon.social/tags/maps" class="mention hashtag" rel="nofollow noopener" target="_blank">#maps</a> <a href="https://mastodon.social/tags/cartography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cartography</a> <a href="https://mastodon.social/tags/milkyway" class="mention hashtag" rel="nofollow noopener" target="_blank">#milkyway</a> <a href="https://mastodon.social/tags/galaxy" class="mention hashtag" rel="nofollow noopener" target="_blank">#galaxy</a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrodon</a> <a href="https://mastodon.social/tags/scicomm" class="mention hashtag" rel="nofollow noopener" target="_blank">#scicomm</a> <a href="https://mastodon.social/tags/sciencecommunication" class="mention hashtag" rel="nofollow noopener" target="_blank">#sciencecommunication</a> <a href="https://mastodon.social/tags/video" class="mention hashtag" rel="nofollow noopener" target="_blank">#video</a> <a href="https://mastodon.social/tags/videos" class="mention hashtag" rel="nofollow noopener" target="_blank">#videos</a> <a href="https://mastodon.social/tags/youtube" class="mention hashtag" rel="nofollow noopener" target="_blank">#youtube</a> <a href="https://mastodon.social/tags/youtuber" class="mention hashtag" rel="nofollow noopener" target="_blank">#youtuber</a>

Daniel Pomarède🚨 Fantastic video by Dr Becky Smethurst New study just made the crisis in Cosmology worse<a href="https://youtu.be/-kTe0xRAU1w" rel="nofollow noopener" translate="no" target="_blank">https://youtu.be/-kTe0xRAU1w</a><a href="https://mastodon.social/tags/laniakea" class="mention hashtag" rel="nofollow noopener" target="_blank">#laniakea</a> <a href="https://mastodon.social/tags/supercluster" class="mention hashtag" rel="nofollow noopener" target="_blank">#supercluster</a> <a href="https://mastodon.social/tags/galaxies" class="mention hashtag" rel="nofollow noopener" target="_blank">#galaxies</a> <a href="https://mastodon.social/tags/universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#universe</a> <a href="https://mastodon.social/tags/hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubble</a> <a href="https://mastodon.social/tags/hubbleconstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubbleconstant</a> <a href="https://mastodon.social/tags/hubbletension" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubbletension</a> <a href="https://mastodon.social/tags/BeckySmethurst" class="mention hashtag" rel="nofollow noopener" target="_blank">#BeckySmethurst</a> <a href="https://mastodon.social/tags/cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#cosmology</a> <a href="https://mastodon.social/tags/cosmography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cosmography</a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomy</a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrophysics</a> <a href="https://mastodon.social/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#physics</a> <a href="https://mastodon.social/tags/gravitation" class="mention hashtag" rel="nofollow noopener" target="_blank">#gravitation</a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#space</a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#science</a> <a href="https://mastodon.social/tags/cosmos" class="mention hashtag" rel="nofollow noopener" target="_blank">#cosmos</a> <a href="https://mastodon.social/tags/map" class="mention hashtag" rel="nofollow noopener" target="_blank">#map</a> <a href="https://mastodon.social/tags/maps" class="mention hashtag" rel="nofollow noopener" target="_blank">#maps</a> <a href="https://mastodon.social/tags/cartography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cartography</a> <a href="https://mastodon.social/tags/milkyway" class="mention hashtag" rel="nofollow noopener" target="_blank">#milkyway</a> <a href="https://mastodon.social/tags/galaxy" class="mention hashtag" rel="nofollow noopener" target="_blank">#galaxy</a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrodon</a>

Daniel FischerThe 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">#GalaxyCluster</a> PLCK G165.7+67.0: <a href="https://arxiv.org/abs/2309.07326" rel="nofollow noopener" target="_blank">https://arxiv.org/abs/2309.07326</a> -> 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">https://bigthink.com/starts-with-a-bang/triple-lens-supernova-jwst/</a> - named <a href="https://scicomm.xyz/tags/Supernova" class="mention hashtag" rel="nofollow noopener" target="_blank">#Supernova</a> H0pe, it shows how <a href="https://scicomm.xyz/tags/JWST" class="mention hashtag" rel="nofollow noopener" target="_blank">#JWST</a> plus <a href="https://scicomm.xyz/tags/GravitationalLensing" class="mention hashtag" rel="nofollow noopener" target="_blank">#GravitationalLensing</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">#HubbleConstant</a> tension.

Daniel PomarèdeLast but not least, a new measurement of the Hubble Constant is obtained by analyzing the geometrical properties of Ho'oleilana: 76.9 (+8.2)(-4.8) km/s /MpcThis value is consistent with other direct local probes, and further exacerbates the "Hubble tension" in the ΛCDM model.<a href="https://mastodon.social/tags/ho" class="mention hashtag" rel="nofollow noopener" target="_blank">#ho</a>'oleilana <a href="https://mastodon.social/tags/hooleilana" class="mention hashtag" rel="nofollow noopener" target="_blank">#hooleilana</a> <a href="https://mastodon.social/tags/cosmology" class="mention hashtag" rel="nofollow noopener" target="_blank">#cosmology</a> <a href="https://mastodon.social/tags/bao" class="mention hashtag" rel="nofollow noopener" target="_blank">#bao</a> <a href="https://mastodon.social/tags/baryon" class="mention hashtag" rel="nofollow noopener" target="_blank">#baryon</a> <a href="https://mastodon.social/tags/acoustic" class="mention hashtag" rel="nofollow noopener" target="_blank">#acoustic</a> <a href="https://mastodon.social/tags/oscillations" class="mention hashtag" rel="nofollow noopener" target="_blank">#oscillations</a> <a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#astronomy</a> <a href="https://mastodon.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrophysics</a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#astrodon</a> <a href="https://mastodon.social/tags/universe" class="mention hashtag" rel="nofollow noopener" target="_blank">#universe</a> <a href="https://mastodon.social/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#space</a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#science</a> <a href="https://mastodon.social/tags/research" class="mention hashtag" rel="nofollow noopener" target="_blank">#research</a> <a href="https://mastodon.social/tags/discovery" class="mention hashtag" rel="nofollow noopener" target="_blank">#discovery</a> <a href="https://mastodon.social/tags/physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#physics</a> <a href="https://mastodon.social/tags/theory" class="mention hashtag" rel="nofollow noopener" target="_blank">#theory</a> <a href="https://mastodon.social/tags/bigbang" class="mention hashtag" rel="nofollow noopener" target="_blank">#bigbang</a> <a href="https://mastodon.social/tags/lcdm" class="mention hashtag" rel="nofollow noopener" target="_blank">#lcdm</a> <a href="https://mastodon.social/tags/hubble" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubble</a> <a href="https://mastodon.social/tags/hubbleconstant" class="mention hashtag" rel="nofollow noopener" target="_blank">#hubbleconstant</a>

Recent searches

Search options

Administered by:

Server stats:

#hubbleconstant