Astronomy Daily: Latest Space News
Join hosts Anna and Avery for daily Space & Astronomy news, insights, and discoveries.Give us 20 minutes and we'll give you the Universe!For more visit, our website and sign up for the free daily newsletter and check out our continually updated newsfeed. http://astronomydaily.io.Follow us on X (formerly Twitter), Facebook, YouTube and TikTok ...just search for AstroDailyPod. Enjoy!Become a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-latest-space-news--5648921/support.
The Planet That Keeps Shrinking plus the Weekend Wrap
Today's episode — The Weekend Wrap, Saturday 12 September 2026: OUR LEAD: A SMALLER MERCURY Mercury has been contracting for four and a half billion years as its huge iron core cools, and it writes the record on its own surface — in long lobe-fronted cliffs called lobate scarps, where one slab of crust has ridden up over another. Add up all that shortening and you get the total contraction. The trouble was that the surface record always gave a smaller number than thermal models predicted. New work led by Gaku Nishiyama at the German Aerospace Center in Berlin, published in G...
Half the Neutron Stars
Today's episode — S05E191, Friday September 11, 2026: Main story: A population-synthesis study published in Nature Astronomy on 10 September argues that magnetars make up roughly half of all neutron stars, not the one-in-a-hundred implied by the catalogues. Celsa Pardo-Araujo and Nanda Rea (Institute of Space Sciences, ICE-CSIC, Barcelona) with Michele Ronchi (ASTRON) and Vanessa Graber (Royal Holloway) modelled the whole isolated-neutron-star population as one family rather than four separate classes, evolving spin-down, magneto-thermal decay and Galactic dynamics together, then filtering the simulated population the way real surveys filter the sky. Of the 24 known neutron stars younger than 2,000 years, magnetars and central compact ob...
A Hundred and Nine Flashes
Today's episode — S05E190, Thursday September 10, 2026: Main story: 109 fast radio bursts have been used to measure how much galactic feedback has smoothed out the matter in the universe. A fast radio burst lasts about a millisecond, and on its way to us it is dispersed — low radio frequencies slowed more than high ones by free electrons along the path, exactly the way a prism separates white light. The size of that delay counts the ordinary matter the burst passed through. Writing in Nature Astronomy on 8 September, a team led by Kritti Sharma at Caltech, with Vikram Ravi, Liam Connor and Elis...
The Smallest Things Remember
Everything beyond Neptune is a leftover. The icy bodies of the Kuiper Belt never got assembled into a planet, and out there — dark, cold and empty enough that things mostly leave each other alone — they are the closest thing we have to the original building blocks of the solar system, still sitting roughly where they were made. The trouble is that everything we know about them, we learned from the big ones. Ground-based telescopes stop at around twenty-five kilometres. In two papers published on 8 September in The Astronomical Journal, teams using Hubble and Webb simultaneously — one telescope in visible light, one in...
The Moon in Five Hours
For fifty years the story has been that the Moon assembled slowly out of a disc of debris. New simulations from Southwest Research Institute add one thing everybody left out — the strength of rock — and get an intact Moon in about five hours. Plus eight black holes that outgrew their galaxies, two massive stars that fell past each other and got caught, Dragonfly's Titan landing site gets a name, and today's daylight occultation of Jupiter.
Links & sources Southwest Research Institute — SwRI-led modeling identifies new scenarios for Moon formation — https://www.swri.org/newsroom/press-releases/swri-led-modeling-identifies-new-scenarios-moon-formation Denton, Canup, A...
Europe Launches From Europe — And Two White Dwarfs Six Minutes Apart
A German rocket lifted off from an Arctic island on Saturday and became the first vehicle ever to reach orbit from Western European soil. Plus: the gaps in stellar streams may not be dark matter after all, two white dwarfs circling every 374 seconds in the far southern sky, peptides that fold in concentrated sulfuric acid, and what Katalyst's LINK is actually doing next to Swift. Both-hemispheres skywatch, and a serious safety warning for tomorrow's daylight Jupiter occultation.
Links & sources · Isar Aerospace — mission updates — https://isaraerospace.com/mission-updates-overview · ESA — Spectrum launches to orbit (imagery) — https://www.esa.int/ESA_Multimedia/Images...
The Hydrogen Map: How a Radio Telescope Heard Half the Universe
Anna and Avery open the Weekend Wrap with a genuine first: South Africa's MeerKAT has detected the 21-centimetre hydrogen signal from four to five billion light years away using radio data alone — no optical galaxy survey propping it up — proving out the technique the Square Kilometre Array will use to measure dark energy. Then the week in review: Roman's coronagraph wakes up, Starship Flight 14 gets a date, Mars turns out to be lopsided inside, BepiColombo lets go, LZ's one unexplained flash, and a centaur caught in the act of becoming a comet. Plus the sky for the week ahead, both hemi...
One Flash in the Xenon: The Dark Matter Event Nobody Can Explain
Links & sources Brown University — LZ experiment sees surprising result in search for dark matter — https://www.brown.edu/news/2026-09-01/lz-dark-matter-results US Department of Energy — LZ Sees Surprising Result in Search for Dark Matter — https://www.energy.gov/science/articles/lz-sees-surprising-result-search-dark-matter Imperial College London — Dark matter hunt takes unexpected turn after puzzling signal spotted in LZ detector — https://www.imperial.ac.uk/news/articles/natural-sciences/physics/2026/dark-matter-hunt-takes-unexpected-turn-after-puzzling-signal-spotted-in-lz-detector/ TeVPA 2026 — Search for high-energy dark matter interactions with the LUX-ZEPLIN experiment — https://indico-icehap.phys.s.chiba-u.ac.jp/event/3/contributions/471/ The LZ Dark Matter Experiment — collaboration site — https://lz.lbl.gov/ Space.com — Sci...
BepiColombo Lets Go: Eight Years, Nine Flybys, One Irreversible Moment
Anna and Avery cover BepiColombo's arrival at Mercury beginning today, as the ESA/JAXA mission jettisons the transfer module that has carried it for nearly eight years and nine planetary flybys. Plus: NASA awards Blue Origin a $700 million contract to build a dedicated Mars communications orbiter, Hubble confirms a brand-new ten-sided cloud pattern at Saturn's south pole — first spotted by amateur astronomers, one of them in outback New South Wales — and China's Galactic Energy flies its reusable Pallas-1 rocket for the first time.
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There's Something Molten Under Mars's South Pole
Today's episode — S05E183, Wednesday September 2, 2026: Main story: A thermal anomaly beneath Mars's south pole. Writing in Nature on August 27, a team led by Alexander Berne (Caltech PhD '26, now University of Arizona) reports that the interior of Mars's southern hemisphere is 200–400 °C hotter than the northern hemisphere and partially molten. The team used tidal tomography — measuring how much the solid body of Mars flexes under the Sun's tidal pull by tracking minute velocity changes in three orbiters (Mars Global Surveyor, Mars Odyssey and Mars Reconnaissance Orbiter) across roughly 25 years of radio tracking data. Hotter, softer rock deforms more, so the deg...
Catching the Uncatchable: Starship's Boldest Test Yet
Today's episode — S05E182, Tuesday September 1, 2026: Main story: SpaceX cleared Booster 21's static fire at Starbase's Pad 2 on August 30, the last major milestone before Starship Flight 14 — the third flight of the Starship V3 design. Ship 41 had already completed its own static fire campaign at Massey's Test Site. Flight 14 will attempt something no Starship flight has done before: catching the ship itself, not just the Super Heavy booster, with the launch tower's upgraded "chopstick" arms. Pad 2 received expanded propellant storage, additional pumps and faster-moving catch hardware ahead of the attempt. The flight follows directly on from Flight 13's Ship 40, which survived a dr...
Roman Launches: A Telescope's Countdown Ends
🚀 The Nancy Grace Roman Space Telescope is safely away — Anna and Avery recap Sunday's clean Falcon Heavy launch, what happens next on the road to L2, and a surprise Australian link in the mission. Then: Elon Musk signals the eventual retirement of Falcon 9, two Nobel laureates defend an accelerating universe against a slowing-expansion claim, a single ancient asteroid strike solves two mysteries on Mars's moon Deimos, and everything worth looking up at tonight, wherever you are. Chapters / topics: Roman Space Telescope's clean launch • What happens next (L2 cruise & commissioning) • Roman's science mission explained • SpaceX signals Falcon 9's eventual retirement...
The Weekend Wrap, August 29: Roman's Countdown Begins
Today's episode — S05E180, Saturday August 29, 2026, The Weekend Wrap: Main story: The Nancy Grace Roman Space Telescope launches tomorrow, Sunday August 30, with a primary window opening 7:26am EDT (11:26 UTC / 9:26pm AEST Sunday night in Sydney) on a SpaceX Falcon Heavy from LC-39A, Kennedy Space Center; backup window Monday August 31 at 7:22am EDT. Total ascent to spacecraft deployment is about 31 minutes 31 seconds, with Falcon Heavy's side boosters landing back at Cape Canaveral roughly 7 minutes 40 seconds after liftoff. Named for NASA's first chief astronomer Nancy Grace Roman (the "mother of Hubble"), the telescope shares Hubble's 2.4-metre primary mirror but pa...
Forty Times Brighter Than the Full Moon: Inside the Space-Mirror Fight
Today's episode — S05E179, Friday August 28, 2026: Feature story: US startup Reflect Orbital has FCC approval for Eärendil-1, a demonstration satellite carrying a 60-foot mirror, the first step toward a planned constellation of 50,000-plus orbital mirrors beaming reflected sunlight to Earth on demand. A new peer-reviewed study (Kocifaj, Bakos and Kundracik, accepted at The Astrophysical Journal Letters) finds a full-scale, 174-foot operational mirror would appear about 40 times brighter than the full Moon to anyone standing in its roughly 3.4-mile beam, with measurable sky-glow extending 20-34 km further — astronomer Gáspár Bakos says it would be "worse than big citi...
Diamond Rain, Decoded: Twenty Years of Disagreement, Solved
Today's episode — S05E178, Thursday August 27, 2026:
Feature story: Physicists at Lawrence Livermore National Laboratory, led by Marius Millot, used the Omega Laser Facility at the University of Rochester to shock-compress diamond samples to about 1 terapascal — roughly three times Earth's core pressure — and temperatures hotter than the Sun's surface, recreating conditions found deep inside Neptune and Uranus. The results resolve a 20-year, ~1,000-degree disagreement between lab measurements and quantum simulations over diamond's actual melting point, confirming the simulations were right. The team also found diamond stays in its normal crystal structure right up until it melts — no intermediate phase —...
Betelgeuse, Up Close: A Star's Boiling Skin, Revealed
Today's episode — S05E177, Wednesday August 26, 2026:
Feature story: Astronomers using the ALMA array in Chile, led by Bill Dent (European Southern Observatory), have released the most detailed picture yet of the actual surface of Betelgeuse, the red supergiant marking Orion's shoulder — a corrugated, irregular surface with bright convective hot spots, some nearly 1,000°F hotter than the surrounding plasma. One hot spot in the northeastern region has persisted for more than seven years, far longer than current models predict, and its orientation lines up with the position of Betelgeuse B — a companion star imaged for the first time in July...
NASA's Roman Space Telescope Is Ready to Fly — Nine Months Early
Today's episode — S05E176, Tuesday August 25, 2026:
Feature story: NASA's Roman Space Telescope is fully encapsulated inside its Falcon Heavy fairing and cleared to launch no earlier than 7:26 a.m. ET this Sunday, August 30 — about nine months ahead of its original schedule, a rarity for a NASA flagship mission. Roman is headed to Sun-Earth L2 for a five-year mission mapping dark energy and dark matter and hunting exoplanets with a starlight-cancelling coronagraph. Its wide-field camera surveys roughly a hundred times faster than Hubble at comparable image sharpness. Named for NASA's first chief astronomer, Nancy Grace Roman — the "mother of Hub...
China Delays Its Most Ambitious Moon Mission Ever
Today's episode — S05E175, Monday August 24, 2026:
Main story: China delays Chang'e-7's launch by about a month. The Chang'e-7 lunar south pole mission's launch window opened today, August 24, but a tropical system (reported as Tropical Depression/Storm Narra) over the Gulf of Tonkin, alongside a cited safety and reliability review, forced a scrub with no immediate new date. Because the mission's landing site — the rim of Shackleton Crater — requires specific solar illumination geometry on top of standard orbital mechanics, its launch windows recur only about once a month for roughly a week at a time, unlike China's earlie...
China's About to Attempt the Most Ambitious Moon Mission Ever
Anna and Avery cover China's Chang'e-7 mission — a four-vehicle lunar south pole expedition, including a leaping hopper robot, that a Brown University scientist calls the most ambitious robotic Moon mission any nation has ever attempted, with its launch window opening Monday. Then: this week's biggest hardware stories, catching up on Starship's Ship 40 (still marooned off Christmas Island), LandSpace's historic private rocket landing in China, NASA pinpointing exactly where a Falcon 9 hit the Moon, and the failed rescue mission for NASA's Swift telescope. Full show notes: Today's episode — S05E174, Saturday August 22, 2026, our second "Weekend Wrap": Main story: China's...
NASA Finds the Crater a SpaceX Rocket Left on the Moon
Anna and Avery cover how NASA, working with South Korea's Danuri orbiter, pinpointed and imaged the exact crater left by a SpaceX Falcon 9 stage that struck the Moon on August 5th. Plus: the private rescue mission for NASA's ailing Swift telescope has officially failed, astronomers may have caught dark matter bending a black hole's jet, and Rocket Lab launches its ninth radar satellite for Japan's iQPS. Full show notes: Today's episode — S05E173, Friday August 21, 2026: Main story: NASA finds the crater a SpaceX rocket left on the Moon. A spent SpaceX Falcon 9 upper stage struck the Moon's surface on August 5, 2026, at 19...
LandSpace Nails It: China's First Private Booster Recovery
Anna and Avery cover LandSpace becoming the first Chinese commercial company to land an orbital-class rocket booster — a big step for the country's private space sector. Plus: astronomers find a "mega-Earth" 23 times more massive than our planet that shouldn't be able to exist, a star weaving impossibly close to our galaxy's supermassive black hole that could reveal its spin within a decade, and new JWST data showing the early universe's galaxies were hiding roughly four times more mass than we thought. Full show notes: Today's episode — S05E172, Thursday August 20, 2026: Main story: China's private spaceflight sector sticks the landing. On August...
First Frenchwoman in Space Steps Outside
Anna and Avery cover Sophie Adenot becoming the first French woman ever to conduct a spacewalk — a historic EVA that ran into some antenna trouble along the way. Plus: a trillion-mile river of gas that explains why some planetary systems end up tilted, an honest update on Starship's Ship 40 as it turns out the recovery saga wasn't quite finished, and SpaceX quietly closing in on 11,000 satellites in orbit.
Full show notes:
Today's episode — S05E171, Wednesday August 19, 2026:
Main story: First Frenchwoman to spacewalk. ESA astronaut Sophie Adenot became the first French woman ever to conduct a spacewalk on A...
Starship's Ship 40 Makes It Home
Anna and Avery close out a three-week saga: SpaceX has recovered Starship's Ship 40 from the Indian Ocean after a soft splashdown, a difficult tow, and a moment where recovery odds looked as low as 18%. Plus: a dead star in the Helix Nebula previews our own Sun's five-billion-years-from-now fate, new evidence the Milky Way was built in part by an ancient galactic collision, and China's fast recovery from a rocket failure with back-to-back launches.
Full show notes:
Today's episode — S05E170, Tuesday August 18, 2026:
Main story: Starship's Ship 40 makes it home. SpaceX has completed recovery of Ship 40, the Starship Fl...
Tiny Robots, Alien Caves: NASA's Plan for Titan
Anna and Avery cover NASA's newly funded concept for spherical, propeller-free "aerobots" that could one day explore the methane-carved cave systems of Saturn's moon Titan. Plus: SpaceX breaks its own launch-turnaround record with two Falcon 9 missions 38 minutes apart, Rocket Lab lands its biggest-ever defense contract to build "Flatellites" for the U.S. Space Force, and a geomagnetic storm arriving today could bring aurora to high latitudes tonight.
**Full show notes:**
Today's episode — S05E169, Monday August 17, 2026:
**Main story: NASA funds spherical "Aerobots" to explore Titan's caves.** A NASA Innovative Advanced Concepts (NIAC) Phase 1 grant is backing SPARK (So...
Is Empty Space Really Empty? A 90-Year-Old Mystery Gets Its Answer (S05E168 — The Weekend Wrap)
Today's episode — S05E168, Saturday August 15, 2026, our "Weekend Wrap":
**Main story: a magnetar confirms 90-year-old vacuum birefringence prediction.** A team led by Rachael Stewart (George Washington University), using NASA's IXPE spacecraft, found the strongest evidence yet that extreme magnetic fields polarize light passing through empty space — confirming a 1936 prediction by Werner Heisenberg and Hans Euler. The team studied magnetar 1E 1547-5408 and found X-rays nearly 3x more polarized than expected, in a direction matching the star's magnetic field. Published August 5 in *Nature*.
**The week in review:**
- **Starship:** Ship 40 (Flight 13, splashed down July 24) remains adrift in the Indi...
The Black Hole Wrapped in a Star: JWST's Cosmic Dawn Discovery
Anna and Avery break down JWST's discovery of MoM-BH*-1, the earliest known "black hole star" — a black hole shrouded in dense gas, glowing from just 660 million years after the Big Bang, that might explain how supermassive black holes grow so fast. Plus: the Perseid meteor shower's spectacular overnight peak, a new satellite built to watch other satellites in geostationary orbit, and veteran NASA astronaut Mike Fincke's retirement after 30 years and four spacecraft.
**Full show notes:**
Today's episode — S05E167, Friday August 14, 2026:
**Main story: JWST finds the earliest known "black hole star."** Astronomers led by Rohan Naidu (Univ...
Two Minutes of Totality: Inside the August 12 Eclipse
Anna and Avery break down yesterday's total solar eclipse — a 182-mile-wide shadow that swept from the Arctic through Greenland and Iceland to northern Spain, giving millions of people up to 2 minutes 18 seconds of totality. Plus: astronomers find three supermassive black holes sharing one distant galaxy (two are about to merge), Virgin Galactic pushes commercial spaceflight back to February 2027, and Rocket Lab signs a new launch customer for Neutron even as the rocket's debut slips further.
**Full show notes:**
Today's episode — S05E166, Thursday August 13, 2026:
**Main story: The August 12 total solar eclipse.** The Moon's shadow crossed the Arctic Ocea...
Eclipse 2026: Where, When & How to Watch (Both Hemispheres)
In this episode • Shadow Day: the only total solar eclipse of 2026 crosses Arctic Russia, Greenland, western Iceland and northern Spain today — the first total eclipse over western mainland Europe since 1999 (Spain’s first since 1905, Iceland’s since 1954). Max totality ~2 min 18 s. Reykjavík ~17:48 UT; northern Spain ~18:27–18:33 UT (Sun very low, ~4–10° up). Live via NASA, timeanddate and the Exploratorium. • Where you are: North America gets an afternoon partial (Nova Scotia ~33%, N. Maine ~28%, Montreal ~18%, Boston ~16%, NYC ~9–10%, Toronto ~8%, DC ~10%; Fairbanks ~37% in the morning) — no totality anywhere on the continent, glasses on throughout. Europe outside the path sees a deep evening partial (London...
Eclipse Eve: Totality Returns to Europe
Astronomy Daily · S05E164 “Eclipse Eve” · Tuesday 11 August 2026. Sources are primary/agency where possible; aggregator dates were checked against originals. In this episode • LEAD — The 12 August total solar eclipse: the only total eclipse of 2026 and the first over mainland Europe since 1999. Totality arcs from Siberia over the North Pole to eastern Greenland, western Iceland, northern Spain and a sliver of Portugal; maximum totality ~2 min 18 s. Partial for much of North America near sunset; not visible from Australia. ESA livestreams from the Javalambre Observatory, Spain. • MIDDLE 1 — A state CASC Long March 7A exploded ~85 seconds after lifting off from Wenchang on 10 August, a tota...
SpaceX Starship Lost at Sea? Plus China’s Landing Attempt & Uranus “Breathing”
Astronomy Daily · S05E163 · “The Long Way Home” · Monday 10 August 2026. Sources verified against primary / institutional outlets. Starship “lost at sea” (Flight 13) • Flight 13 launched 24 July 2026 from Starbase, South Texas; the upper stage (“Ship,” Ship 40, ~52 m) made the softest Starship water landing yet in the Indian Ocean off Western Australia — and, in a program first, survived intact and afloat. • SpaceX had not planned to recover it. Musk confirmed the salvage attempt on 28 July (“We’re sending a ship out to recover Starship”); recovery ship Go Australis was joined by Norwegian tugs Normand Ranger and Skimmer Tide, with a tow line to the nose. • On 7 August, Musk said...
Whirlpools Found on the Sun’s Surface for the First Time
This weekend on Astronomy Daily: the Inouye Solar Telescope reveals whirlpools on the Sun’s surface for the first time, a Falcon 9 upper stage carves a fresh crater on the Moon, Voyager 2 pulls off a daring "Big Bang" power swap 21 billion kilometres away, and the LINK spacecraft wins its de-spin battle in the race to save NASA’s Swift. Plus your both-hemispheres guide to the 12 August total solar eclipse and the moonless Perseid peak. In this episode ● (01:20) LEAD — First-ever sighting of Kelvin–Helmholtz vortices on the Sun (Nature, 5 Aug; Inouye Solar Telescope / NSO / MPS) ● (09:00) Falcon 9 upper stage 2025-010D impacts the Moon near Ei...
The Colour of Empty Space
Astronomy Daily · S05E161 · “The Colour of Empty Space” · Friday 7 August 2026. Hosts: Anna & Avery. astronomydaily.io · @AstroDailyPod ① Vacuum birefringence: reading a magnetar ● NASA’s IXPE, with NICER and the Parkes/Murriyang radio telescope (NSW), measured the polarised X-rays of magnetar 1E 1547.0−5408. ● Result: soft X-ray polarisation ~65% at 2 keV, rising to nearly 80% at some rotation phases — the strongest signal yet of vacuum birefringence, a QED effect predicted by Heisenberg in 1936. ● The team calls it the “most definitive signal to date,” not a confirmed detection; an April 2026 analysis disputes it under different geometry. Co-leads: Rachael Stewart; Hoa Dinh Thi (Rice); with Marcus Lower (Swinburne). ● Source: <...
A Rocket Just Hit the Moon — And Telescopes Caught It
Astronomy Daily · S05E160 · 6 August 2026. In this episode: a Falcon 9 upper stage confirmed to have struck the Moon; a live ISS spacewalk; supernova SN 2026gzf caught at first light; SpaceX Crew-13 previewed; and a both-hemispheres guide to the 12 August eclipse and Perseids. FALCON 9 LUNAR IMPACT (LEAD) ● Spent upper stage 2025-010D struck near Einstein Crater (~19.4°N, 93.3°W) at ~06:35 UTC, 5 Aug 2026 — matching Bill Gray / Project Pluto predictions. ● ESO’s Very Large Telescope (Paranal) detected sodium and lithium in the impact plume for ~5–10 minutes — sodium from lunar soil, lithium likely from the rocket. ● NASA’s Lunar Reconnaissance Orbiter holds a pre-impact baseline and will image the fr...
Voyager 2’s “Big Bang” Rescue: One More Year in Deep Space
Astronomy Daily S05E159 — Wednesday, 5 August 2026. In this episode: a power-saving “Big Bang” keeps Voyager 2 doing science, direct-to-phone satellites reach orbit, Curiosity finds a vast honeycomb field on its 14th Martian anniversary, and NASA’s Aspera prepares to hunt the universe’s missing gas. ① Voyager 2’s “Big Bang” power save • JPL engineers freed up power by simultaneously switching off certain devices and substituting lower-power alternatives, while keeping the spacecraft warm enough to operate. • The Voyagers run on radioisotope thermoelectric generators (RTGs) and lose ~4 watts per year as their plutonium decays; after nearly 50 years, power margins are razor-thin. • The move keeps three instruments —...
The Crater Makers: Falcon 9 Hits the Moon Tomorrow | Today’s Space News
S05E158 — “The Crater Makers” · Tuesday 4 August 2026. Four stories on cosmic impacts — and a new map of the X-ray sky — plus a both-hemispheres skywatch. ① A dead Falcon 9 is about to crater the Moon ● A spent SpaceX Falcon 9 upper stage (catalogued 2025-010D) is predicted to strike the Moon near Einstein Crater on 5 Aug 2026 at ~06:35 UTC — the second documented uncontrolled rocket impact on the Moon. ● The stage launched Firefly’s Blue Ghost and ispace’s Resilience landers in Jan 2025, then was stranded in a chaotic Earth orbit for ~18 months. Impact speed ~2.4 km/s (~5,400 mph); expected crater ~17–27 m across. ● Prediction by Bill Gray (Project Pluto). NASA’s LRO can ima...
The Largest Galaxy in the Universe, Measured at Last
Astronomy Daily · S05E157 · “The Edge of Everything” · Monday 3 August 2026
In this episode • The largest galaxy, measured at last. Ultra-deep imaging of IC 1101 in the Abell 2029 cluster has traced its outer edge for the first time: an edge radius of ~260 kpc, a diameter near 520 kpc (~1.7 million light-years), and ~3.4 trillion solar masses in stars — about 17× the width of the Milky Way. Faint outer structures aligned with cluster X-ray disturbances show it is still accreting. Source: Marrero-de la Rosa et al., “How large can galaxies be? Ultra-deep imaging of IC 1101”, accepted A&A (arXiv:2607.15340, 16 Jul 2026); phys.org, 31 Jul 2026; The Debrief, 1 Aug 2026. •...
The First “Self-Driving” Telescope Goes Stargazing (SkAI )
Astronomy Daily S05E156 — Weekend Space & Astronomy News Wrap. Saturday, 1 August 2026. In this episode • The first “self-driving” telescope — a SkAI deep-learning system (Northwestern / UChicago / Fermilab) schedules and re-plans observations in real time on the Dark Energy Camera at the Blanco 4-m, Cerro Tololo, Chile — matching human schedulers across two runs. • Betelgeuse's companion imaged — ESO's VLT delivers the clearest view yet of likely “Betelgeuse B,” ending a century-long search (recap, E153). • (44) Nysa — first known three-lobed (trilobate) asteroid, plus a ~1 km moon, from LBT + VLT high-contrast imaging (recap, E155). • A black hole's 300,000-light-year reach — XRISM traces quasar-driven...
Three of a Kind
S05E155 · Friday 31 July 2026 · Astronomy Daily with Anna & Avery. Four stories and a both-hemispheres skywatch. Australian English. ① Asteroid (44) Nysa — the first three-lobed world, and its hidden moon ● trilobate body — three lobes joined by two narrow necks; a candidate “first” of its kind. ● A new ~1 km moon, S/2026 (44) 1, was found orbiting ≥170 km out — spotted using high-contrast imaging borrowed from exoplanet work, and confirmed moving across two observing runs. ● The moon lets astronomers weigh Nysa (mass → density), which should help decide between a genuine contact-trinary and a single, deeply indented body. ● Nysa is a bright, main-belt E-type (enstatite-rich) asteroid, ~75 km across, known since 1857. ● Source: Lowell Observatory...
The Reach of a Giant
Astronomy Daily S05E154 — “The Reach of a Giant.” Thursday, 30 July 2026. Hosted by Anna and Avery. In this episode • A supermassive black hole caught heating and stirring an entire galaxy cluster — turbulence reaching ~300,000 light-years, about 100× more energetic than expected (XRISM / quasar H1821+643). • Why some “clean” white dwarfs are secretly feasting: magnetic fields funnel shredded planetary debris to the poles, aurora-style, hiding the meal. • NASA’s Psyche used its Mars flyby as a dress rehearsal — spotting Phobos and Deimos from afar to practise for its 2029 moonlet hunt at asteroid 16 Psyche. • A new study on keeping the road to the Moon clear: modelling how debris disp...
Betelgeuse Is Not Alone!
Astronomy Daily · S05E153 · Wednesday 29 July 2026. Four stories from the frontier of space and astronomy, plus a both-hemispheres look at the sky — and news of our brand-new website. In this episode • Betelgeuse is not alone. ESO’s VLT/SPHERE has captured the clearest direct image yet of Betelgeuse B, the long-suspected companion to the famous red supergiant — ending a roughly century-long search. Published 28 July 2026 in Astronomy & Astrophysics (Montargès, Boccaletti et al.). The companion is more massive than predicted (≈2–3 solar masses), likely paces Betelgeuse’s ~6-year brightness cycle, and may eventually spiral into the supergiant. • ...
