# Pluto's Big Night & a Sharper Look at M87's Black Hole | Today's Space News

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Text version: https://stenobird.com/podcast/astronomy-daily-space-news-updates-5658676/pluto-s-big-night-a-sharper-look-at-m87-s-black-hole-today-s-space-news.md
Podcast: [Astronomy Daily: Latest Space News](https://stenobird.com/podcast/astronomy-daily-space-news-updates-5658676)
Published: 2026-07-27T11:16:25+00:00
Episode link: https://www.astronomydaily.io
Audio file: https://dts.podtrac.com/redirect.mp3/mgln.ai/track/op3.dev/e/api.spreaker.com/download/episode/73191215/pluto_s_big_night_a_sharper_look_at_m87_s_black_hole_today_s_space_news.mp3
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Duration seconds: 1172

## Resource

Astronomy Daily · S05E151 · “The Faint Little World Has Its Day” · Monday 27 July 2026 · Hosts Anna & Avery. Pluto has its brightest night of the year — so we go deep on the world nobody can agree how to label. Then a crew comes home after 241 days, the galaxy’s most common planet turns out to maybe hide oceans of molten rock, and the first black hole ever photographed gets a sharper, two-colour read. In this episode LEAD — PLUTO AT OPPOSITION • Tonight Pluto sits opposite the Sun in Capricornus, near its closest point to Earth (~34.5 AU) and at its brightest for the year — yet still only magnitude ~15. • The full arc: Percival Lowell’s “Planet X,” Clyde Tombaugh’s 1930 discovery by blink comparator, and the name suggested by 11-year-old Venetia Burney. • The 2006 IAU reclassification to “dwarf planet” (the “clearing the neighbourhood” rule) — and the still-live debate between dynamical and geophysical definitions of a planet. • What New Horizons found in 2015: the nitrogen-ice plain of Sputnik Planitia, the famous “heart,” water-ice mountains, a hazy atmosphere, and a possible subsurface ocean. STORY 2 — HOME AFTER 241 DAYS • Soyuz MS-28 lands in Kazakhstan with NASA’s Chris Williams and cosmonauts Kud-Sverchkov and Mikaev; ~3,856 orbits, 102M+ miles; Expedition 74→75 handover to Jessica Meir. STORY 3 — SUB-NEPTUNES • New ASU modelling: deep clouds of vaporised rock and salt can act as a thermal blanket, potentially sustaining a hidden magma ocean and reshaping how we read JWST spectra. STORY 4 — M87 IN TWO COLOURS • A Shanghai Astronomical Observatory-led team builds the first spatially-resolved dual-frequency spectral map of M87* (1.3 mm + 3.5 mm, EHT + GMVA), linking the famous ring to the real physics of plasma at the event horizon. SKYWATCH — BOTH HEMISPHERES…

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