Space News Today

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. • Hayabusa2's record asteroid flyby. JAXA confirmed (press conference 30 Jul) that its Hayabusa2 probe passed just 400 m from the surface of near-Earth asteroid Torifune on 5 July — 744 m from centre at 18,000 km/h — the closest asteroid flyby by any mission, plus the first-ever laser ranging of an asteroid during a flyby. Torifune proved to be a contact binary. Source: JAXA press conference, 30 Jul 2026; phys.org / Japan Today (AFP), 31 Jul 2026; autoevolution, 1 Aug 2026. • UK's first orbital launch on hold. Rocket Factory Augsburg de-stacked its RFA One at SaxaVord Spaceport (Unst, Shetland) after finding a vehicle issue during hot-fire test prep (announced 28 Jul). The certified launch window opens 10 August; a successful flight would be the first orbital launch from UK soil. Source: RFA statement (X), 28 Jul 2026; Space.com, 1 Aug 2026; Shetland Times, 28 Jul 2026. • Andromeda is winding down. A new Hubble study mapping ~200 million stars across two-thirds of Andromeda's disk finds star formation has declined over ~500 million years (from ~1 to ~0.2 solar masses/year), with the steepest drop in the last 40 million years — possibly linked to an interaction with satellite galaxy M32. Source: Williams et al., The Astrophysical Journal, 27 Jul 2026; NASA/STScI release, 27 Jul 2026. Skywatch — both hemispheres • Comet 10P/Tempel 2 — perihelion 2 Aug; closest approach to Earth tonight (3 Aug). Binoculars/small scope, dark skies. Best pre-dawn from the Southern Hemisphere; ~9:30–10:30 pm local for mid-northern latitudes before moonrise. • Moon near Saturn tonight (3 Aug) — naked-eye pairing, both hemispheres, up into dawn. • Mercury at greatest western elongation (2 Aug) — low eastern horizon ~1 hr before sunrise, toward Gemini; Mars higher. Better placed for northern observers. • Diary (2 days out): Falcon 9 upper stage (2025-010D) lunar impact near Einstein Crater, 5 Aug ~06:35 UTC — ~2:35 am EDT / 11:35 pm PDT (4 Aug); North America best-timed on the dark limb. Southern Hemisphere: ~4:35 pm AEST (daylight) — await orbiter after-images. • Looking ahead: 12 Aug total solar eclipse (Greenland/Iceland/Spain) + moonless Perseid peak + six-planet dawn alignment. View partial phases only through certified ISO 12312-2 filters. Links & follow • Website, back catalogue, news feed & newsletter: astronomydaily.io • Social: @AstroDailyPod · Part of the Bitesz.com Podcast Network





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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 winds from H1821+643 reshaping an entire galaxy cluster (recap, E154). • August skywatch — Comet 10P/Tempel 2 at perihelion (2 Aug); total solar eclipse crossing Greenland, Iceland, Spain & Portugal (12 Aug) paired with a moonless Perseid peak (12–13 Aug); a six-planet line-up through the month. Sources • SkAI / self-driving telescope: Northwestern University news release, 31 July 2026; phys.org, 31 July 2026 (Blanco 4-m / DECam / Cerro Tololo). • Betelgeuse companion: ESO / VLT; Montargès et al., Astronomy & Astrophysics (covered in E153). • (44) Nysa: Large Binocular Telescope (SHARK-VIS) + VLT high-contrast imaging; Lowell Observatory release (covered in E155). • Black-hole feedback: XRISM observations of quasar H1821+643 (covered in E154). • Skywatch: timeanddate.com and Space.com August 2026 sky guides; Royal Observatory Greenwich 2026 highlights (eclipse path and Perseid peak details). astronomydaily.io · @AstroDailyPod · Part of the Bitesz.com Podcast Network





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SpaceTime Series 29 Episode 91 The near-Earth asteroid that’s actually a comet Astronomers have confirmed that the near Earth Asteroid 1998 SH2 is actually a comet further blurring the lines between the two types of celestial bodies. Psyche’s gravity assist Mars Flyby NASA’s Psyche spacecraft has undertaken a successful gravity assist flyby of the red planet Mars to help slingshot the probe to its ultimate target – the strange metallic asteroid 16-Psyche. China expanding its space station As NASA looks at winding down and de-orbiting the International Space Station in 2030, Beijing has announced new plans to double the size of its Tiangong Space Station. The Science Report New clues about how the body’s nervous system senses warm and cool temperatures. Alarming pesticide levels found in the food of endangered Western Australian Carnaby's cockatoos. Scientists have discovered evidence of an ancient species of snake that lived underground. Study warns working from home may not have a significant impact on your carbon footprint. Skeptics guide to multiple Ohio Bigfoot sighting. Our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics





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From SpaceX Nuclear Experiments to Galactic Discoveries


Join host Andrew Dunkley and astronomer Fred Watson as they explore some of the most fascinating topics in space science, from innovative nuclear power tests in space to the expanding boundaries of our galaxy. Whether you're an astrophotography enthusiast or a space policy advocate, this episode delivers insights that broaden your cosmic perspective.


In this episode:


SpaceX's recent CubeSat launch featuring a tritium-based nuclear power source for space applications


The potential and safety considerations of nuclear energy in space missions


The possibility of nuclear weapons detection in space using neutron sensors and passive radiation monitoring


The intriguing hypothesis of dark matter stars and their potential signatures


The mystery surrounding Earth's dust origins—cosmic spherules and their unknown sources


New research indicating our galaxy's spiral arms are about 10% longer than previous estimates, based on light echoes from gamma ray bursts


The rise of smart telescopes and their role in making astrophotography more accessible for amateurs


Timestamps:


(00:00) Introduction and overview of today's headlines


(02:00) SpaceX's CubeSat with tritium power source—what's happening?


(04:33) Nuclear power in space: Safety and future applications


(11:03) Detecting nuclear weapons in space: Challenges and innovations


(22:45) Earth's dust origins: Micro-meteorites and cosmic spherules explained


Resources & Links:


SpaceX's CubeSat nitrogen launch story


Beta-voltaic nuclear power technology


NASA's Chandra X-ray Observatory


Universe Today article on Milky Way mapping


James Webb Space Telescope and dark matter research


Science Advances publication on Earth's micrometeorites


Connect with Fred Watson:


LinkedIn


Twitter


Enjoying the show? Support us on Patreon and leave a review on your favorite podcast platform.


Thanks for tuning in and keep looking up!





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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 / University of Arizona press release, 29 Jul 2026; study “Unmasking (44) Nysa: Evidence for a Trilobate Structure” (Minker et al.). Coverage: Space.com, Gizmodo, 29–30 Jul 2026. ② Mapping Alien Continents — a NASA concept to image an exoplanet’s surface ● NASA’s 2026 NIAC round funds 18 early-stage “visionary” concepts (~$175k each, 9 months). These are seed studies, not missions. ● Paul Stankus (Brookhaven) proposes “Mapping Alien Continents”: resolve the surface of an Earth-like exoplanet — continents, oceans — in visible light. ● Method: a novel “dynamic hierarchical nulling” interferometer to suppress starlight at 10¹⁰-to-1 contrast, then combine beams from two spacecraft ~100 km apart (optical VLBI-style imaging). ● Source: NASA “2026 Innovative Technology Concepts” release and NIAC selections (posted 21 Jul; consolidated release ~29 Jul 2026); Universe Today feature, 30 Jul 2026. ③ Solar-storm watch — CMEs inbound, minor-storm and aurora potential ● Two faint coronal mass ejections, plus coronal-hole solar wind, are set to give Earth glancing blows; forecasters flag possible G1 (minor) geomagnetic storms and auroras over the coming days. ● G1 means little grid impact but aurora visible at somewhat lower latitudes than usual — see the skywatch for where to look, both hemispheres. ● Source: NOAA SWPC (WSA-ENLIL model); EarthSky / The Sun Today, 30 Jul 2026. ④ ESCAPADE’s family portrait of Earth and the Moon ● NASA’s twin Mars orbiters (“Blue” and “Gold,” built by Rocket Lab) imaged Earth and the Moon as thin crescents in visible and thermal-infrared light from a loiter orbit near Sun–Earth L2. ● In infrared, Earth’s night side glows with its own heat; the Moon’s shadowed half is far colder — a calibration check before Mars. ● ESCAPADE’s science goal (arrival Sept 2027): measure how the solar wind strips Mars’s unshielded atmosphere — the payoff of today’s solar-wind thread. ● Source: NASA (Goddard) image feature, ~25 Jul 2026 (images captured 3 Jul); NAU / phys.org; Universe Today, 29 Jul 2026. Skywatch — both hemispheres ● Bright waning-gibbous Moon (post-Buck-Moon, 29 Jul) washes out faint targets. ● Southern Delta Aquariids + Alpha Capricornids just past peak (SH-favoured; Moon-hampered). Perseids build to a near-moonless peak on the night of 12–13 Aug — prime for North America, low in the north for the SH. ● 12 Aug total solar eclipse: totality across Greenland / Iceland / Spain; partial for parts of northern North America and Europe. ISO 12312-2 eye protection required for any partial phase. ● Pre-dawn planets low in the east (Sydney and North American framing). Aurora watch for high latitudes both hemispheres if the storms land. ● Diary: a spent Falcon 9 upper stage (2025-010D) is predicted to hit the Moon near Einstein Crater on 5 Aug 2026, ~06:35 UTC (~2:34 a.m. ET). North America best-timed; telescope needed, Moon ~56% lit, target the limb dust plume. From Sydney the Moon is down at impact — rely on LRO after-images. Callback to E125/E147. Source: Fernando et al., arXiv 2607.14625.





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