{"id":419063,"date":"2026-04-26T22:22:19","date_gmt":"2026-04-26T22:22:19","guid":{"rendered":"https:\/\/www.newsbeep.com\/ie\/419063\/"},"modified":"2026-04-26T22:22:19","modified_gmt":"2026-04-26T22:22:19","slug":"2026-april-25-the-persistence-of-sunlight","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ie\/419063\/","title":{"rendered":"2026 April 25 \u2013 The Persistence of Sunlight"},"content":{"rendered":"

Discover the cosmos!<\/a>
\nEach day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.\n<\/p>\n

2026 April 25
\n

\n\"See<\/a>\n<\/p>\n

Explanation: <\/p>\n

This seaside
\nsunset offered<\/a>
\na surreal experience, captured
\nin a sea and skyscape from the west coast of
\nSardinia, Italy, planet Earth.<\/p>\n

The Daliesque scene
\nis a composition<\/a>
\nof sequential exposures made with a camera and long telephoto lens.<\/p>\n

The Sun is
\nnot
\nmelting, though<\/a>.<\/p>\n

Its shifting and fluid appearance as it nears the
\nhorizon is caused as refraction along the line of sight
\nchanges and creates distorted images or
\nmirages of the
\nreddened solar disk<\/a>.<\/p>\n

The changes in atmospheric refraction correspond to
\natmospheric layers<\/a>
\nwith sharply different temperatures and
\ndensities.<\/p>\n

Another famous but fleeting effect of atmospheric refraction produced
\nby a long sight-line to the setting (or rising) Sun is
\noften called the green flash<\/a>.<\/p>\n