tag:blogger.com,1999:blog-4672881018321440403.post4057750931192085612..comments2024-01-08T09:12:42.920-05:00Comments on SF and Nonsense: Knowing what we don't know -- then continuing to learnEdward M. Lernerhttp://www.blogger.com/profile/15620756142619513714noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4672881018321440403.post-64893877177024432532015-02-25T14:44:02.315-05:002015-02-25T14:44:02.315-05:00Of course, if the universe was still inflating—or ...Of course, if the universe was still inflating—or was just inflating at the edges—all of the galaxies further than 13.8 billon ly haven't had time for their energy to reach us. Just because we are getting close to seeing objects at that great distance doesn't mean it stops there. Like you said, so much to discover.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4672881018321440403.post-77721468616708167902015-02-19T13:25:58.647-05:002015-02-19T13:25:58.647-05:00I believe you're correct. The term "dark ...I believe you're correct. The term "dark matter" <i>supposes</i> the explanation for anomalous attractions will turn out to be a type of matter. The term "dark energy" <i>supposes</i> the explanation for the accelerating expansion of the universe will turn out to be a type of energy. <br /><br />I suspect both are good bets ... but not sure things.<br /><br />Is inflation ongoing? I don't believe so, at least within the visible universe. Otherwise, we'd have heard reports of galaxies in the far distance/past disappearing.Edward M. Lernerhttps://www.blogger.com/profile/15620756142619513714noreply@blogger.comtag:blogger.com,1999:blog-4672881018321440403.post-68665591055369188022015-02-19T13:13:50.818-05:002015-02-19T13:13:50.818-05:00Knowing what we don't know gives us something ...Knowing what we don't know gives us something to budget against. Yet it may be small potatoes compared to the great unknowns we don't know. Even words like 'energy' and 'matter' when referring to the dark stuff are hedges. Exactly what matter/energy properties do they possess? And dark is pretty much a way of saying 'we're in the dark.' I understand the rational for the early universe expanding FTL has to do with space itself expanding. Would we know if that expansion was continuing ... or would we just measure relative motion from the space we're in? Anonymousnoreply@blogger.com