[HN Gopher] Gravity Without Mass: UAH Study Proposes Alternative...
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       Gravity Without Mass: UAH Study Proposes Alternative to Dark Matter
        
       Author : racional
       Score  : 31 points
       Date   : 2024-06-07 16:23 UTC (6 hours ago)
        
 (HTM) web link (www.azoquantum.com)
 (TXT) w3m dump (www.azoquantum.com)
        
       | heartag wrote:
       | Hey, look, it's my alma mater. Back in the news for wonky gravity
       | physics research. Gotta love it.
       | 
       | https://huntsvillebusinessjournal.com/news/2023/07/30/solvin...
        
         | throwup238 wrote:
         | At least it wasn't University of Mississippi!
        
           | selimthegrim wrote:
           | They actually have some really good faculty in gravitational
           | wave stuff and general relativity.
        
         | jfengel wrote:
         | I know UAH for its production of the Global Temperature Report,
         | which produces primary data clearly showing climate change, and
         | run by a bunch of climate change deniers.
         | 
         | (Generally, not Stage 1 denialists, but various later stages of
         | "it's not so bad" or "it's not our fault". At least one is also
         | a creationist.)
        
         | zephraph wrote:
         | Ha, mine too! 2014
        
       | bawolff wrote:
       | Im not a physicist.
       | 
       | But it doesn't sound that convincing to replace dark matter due
       | to lack of direct evidence, with something even more exotic which
       | also has no direct evidence
        
         | ItCouldBeWorse wrote:
         | When space expands it produces gravity? Like a groaning ship
         | ripped apart, something snaps, when nothing is produced and
         | becomes a place, producing a small background ripple.
         | Concentric from the big bang outwards, like growth rings,
         | dragging apart lights and things.
         | 
         | Its not a valid concept, but its a new idea, something to test,
         | anything is better, then collecting data and watching the model
         | drift away every day like a ghost in the night.
        
         | simne wrote:
         | Exists at least one example (to be exact there are few, but
         | this one is overwhelming when looking carefully), which could
         | be explained by topological defect - in 2023 made photo of two
         | galaxies, which looking exactly same, but mirrored with
         | invisible mirror.
         | 
         | Sure, this could be just coincidence of very similar galaxies,
         | need more observations.
        
           | simne wrote:
           | https://www.sciencealert.com/we-may-have-just-found-
           | evidence...
        
       | PartiallyTyped wrote:
       | Nit: the title in the article is kinda wrong; Dark Matter is a
       | set of observations for which we do not have a proper theory that
       | explains it. It's not an "answer" or a "solution". We say it's
       | "matter" because it interacts gravitationally.
        
       | NoMoreNicksLeft wrote:
       | If there is distinct "negative mass" out there, does that mean
       | that we can built FTL devices after all? Or do we also need
       | negative energy?
        
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       (page generated 2024-06-07 23:01 UTC)