https://therepository.org/absolute-magnitude/What the instrument actually returned, before the conversion that became the headline.enhttps://therepository.org/absolute-magnitude/ep04-the-event-horizon-telescope-never-took-a-photograph/https://therepository.org/absolute-magnitude/ep04-the-event-horizon-telescope-never-took-a-photograph/Tue, 08 Sep 2026 02:15:06 +0000The famous orange ring is not a photograph, and no instrument in the array ever recorded an image. Eight telescopes recorded arrival times; two conversions did the rest.https://therepository.org/absolute-magnitude/ep03-12-500-red-giants-caught-gaia-overcorrecting-itself/https://therepository.org/absolute-magnitude/ep03-12-500-red-giants-caught-gaia-overcorrecting-itself/Thu, 03 Sep 2026 05:00:35 +0000Every star with a convective envelope is ringing right now. This episode measures distance by listening to that ring, never once touching a parallax -- and uses it to catch a spacecraft's own correction crossing zero.https://therepository.org/absolute-magnitude/ep02-nobody-has-ever-measured-the-distance-to-a-galaxy/https://therepository.org/absolute-magnitude/ep02-nobody-has-ever-measured-the-distance-to-a-galaxy/Sun, 30 Aug 2026 20:05:58 +0000Every distance beyond about three thousand parsecs was calculated, not measured. There is exactly one rung of the ladder that is pure geometry, and it is very short.https://therepository.org/absolute-magnitude/ep01-the-star-that-shrank-by-a-third-and-nobody-took-a-new-photo/https://therepository.org/absolute-magnitude/ep01-the-star-that-shrank-by-a-third-and-nobody-took-a-new-photo/Sun, 30 Aug 2026 14:11:09 +0000UY Scuti is the largest star you have ever been told about: 1,708 times the radius of the Sun. That number was never measured. What was measured is an angle.