{"id":2067,"date":"2026-09-15T01:15:00","date_gmt":"2026-09-14T16:15:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-15-venus-uv-absorber-en\/"},"modified":"2026-09-15T01:15:00","modified_gmt":"2026-09-14T16:15:00","slug":"2026-09-15-venus-uv-absorber-en","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-15-venus-uv-absorber-en\/","title":{"rendered":"Venus\u2019s dark cloud markings require an exceptionally strong absorber"},"content":{"rendered":"

2026-09-15 01:15 KST<\/strong><\/p>\n

Venus has an unknown material that darkens ultraviolet and blue cloud patterns. After accounting for known gases and droplet scattering, the model required a peak coefficient of 1,278 cm\u22121 at 375 nm.<\/p>\n

This is an inferred bulk-liquid property, not a directly measured molecule or concentration. Organic examples are possible, but identity, biological origin and life remain unconfirmed.<\/p>\n

Why scattering matters<\/h2>\n

Tiny droplets can look bright while containing dark liquid. The study inverted 365\u2013455 nm reflectance using droplet size, altitude and gas absorption.<\/p>\n

Meaning of 1,278<\/h2>\n

It is a base-10 coefficient for a hypothetical 1-cm liquid path. Real droplets and light paths are much smaller and more complicated.<\/p>\n

\"Venus\u2019s
This AI-generated image explains the topic; it is not a photograph of the actual event, patient, observation, map or geological site.<\/figcaption><\/figure>\n

Candidates<\/h2>\n

A representative porphyrin-like pigment would need roughly 12 g\/L; weaker inorganic absorbers would need to be major aerosol components. Mixtures could fit too.<\/p>\n

Importance<\/h2>\n

The unknown absorber takes up more than half the solar energy reaching the cloud-top atmosphere, affecting heating and circulation.<\/p>\n

Next<\/h2>\n

The model covers 365\u2013455 nm and an assumed 6-km layer. In-situ composition and spectra are needed to distinguish candidates.<\/p>\n

Primary source and independent checks<\/h2>\n

Astrobiology \uc6d0 \ub17c\ubb38 \uc11c\uc9c0<\/a><\/p>\n

PubMed \uc11c\uc9c0\uc640 \ucd08\ub85d<\/a><\/p>\n

ScienceDaily \ub3c5\ub9bd \uc5f0\uad6c \uc18c\uac1c<\/a><\/p>\n

\uae30\uc874 Akatsuki \uad00\uce21 \ub300\uc870<\/a><\/p>\n

Read in other languages<\/h2>\n

\ud55c\uad6d\uc5b4<\/a> \u00b7 English<\/a> \u00b7 Espa\u00f1ol<\/a> \u00b7 \u65e5\u672c\u8a9e<\/a> \u00b7 Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

A scattering-aware model constrained the cloud liquid\u2019s decadic absorption coefficient to 1,278 per centimetre at 375 nm. It did not identify the absorber or detect organics or life.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2067","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=2067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}