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Apr 13, 2017 at 12:40 history edited CommunityBot
replaced http://physics.stackexchange.com/ with https://physics.stackexchange.com/
Sep 13, 2014 at 21:02 history tweeted twitter.com/#!/StackPhysics/status/510896330944688128
Sep 12, 2014 at 22:45 vote accept doetoe
Sep 12, 2014 at 14:19 comment added MariusMatutiae Two answers below are very good. But basically, the reason is the same for which stars do not look pointlike, but have a finite size: any astronomical instrument has a finite resolution, from the worst (SK!!) to the best (VLBI, $10^{-4}$ arcsec), so that any source smaller than the angular resolution appears as large as the angular resolution. And, BTW, solar neutrinos come from the inner 10% of the Sun's mass, which has a radius of a few percent of the total solar radius.
Sep 12, 2014 at 13:40 answer added dmckee --- ex-moderator kitten timeline score: 30
Sep 12, 2014 at 13:26 answer added user10851 timeline score: 22
Sep 12, 2014 at 11:59 history edited Qmechanic
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Sep 12, 2014 at 11:55 history asked doetoe CC BY-SA 3.0