Space News Today

Space Nuts: A New Dwarf Planet, 3I/ATLAS, and Neptune’s Hidden Trojans

In this episode of Space Nuts , Andrew Dunkley and Professor Fred Watson explore three discoveries from across the Solar System and beyond. They begin with the Vera C. Rubin Observatory’s discovery of a distant, potentially large dwarf planet, and discuss what its unusual orbit could tell us about the hunt for the elusive Planet Nine. Next, they examine new James Webb Space Telescope observations of interstellar comet 3I/ATLAS, whose unusual chemistry may preserve clues to its origins in a very cold environment billions of years ago. Finally, the hosts turn to Neptune’s long-sought Trojan asteroids, discovered in data from the Rubin Observatory by a team in Belfast. Join Andrew and Fred Watson for distant worlds, ancient cosmic ice and asteroids hiding in the dark.

Key topics

- The Vera C. Rubin Observatory’s discovery of dwarf planet candidate 2026 ED138.

- What makes an object a dwarf planet, and how its orbit could inform the Planet Nine debate.

- 3I/ATLAS’s unusual isotope ratios, methane and possible origins in an ancient, cold environment.

- The discovery of Neptune’s Trojan asteroids and why they have been so difficult to observe.

Timestamps

00:00 - Introduction and episode overview

01:20 - The Vera C. Rubin Observatory discovers a new distant dwarf planet

05:30 - What defines a dwarf planet and how it may eventually be named

09:00 - The object’s size, unusual orbit and possible relevance to Planet Nine

12:00 - 3I/ATLAS and its unusual chemistry revealed by the James Webb Space Telescope

16:00 - Isotope ratios, methane and clues to the comet’s age and origins

20:00 - Neptune’s Trojan asteroids are finally discovered

24:00 - How Trojan asteroids share a planet’s orbit and why Neptune’s were hard to find

27:00 - Closing remarks and where to follow Space Nuts

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Show notes

ESCAPADE's double slingshot over Australia NASA's twin ESCAPADE spacecraft, Blue and Gold, will each fly a powered Earth flyby on their way to Mars: the first around 5 a.m. EST on Saturday 7 November, the second around 6 a.m. EST on Monday 9 November. Each fires its engine for about nine minutes at closest approach, a manoeuvre NASA says no Mars-bound spacecraft has flown successfully before. The burns happen over southern Australia, starting 8:51 p.m. AEDT on the 7th and 9:51 p.m. AEDT on the 9th, and the spacecraft may be visible there through telescopes. Western US observers get their best chance between midnight and 2 a.m. PST. Arrival at Mars: 7 and 9 September 2027. Where did the oxygen go? Hubble's GLOW project (McQuinn et al., The Astrophysical Journal, published 2 November; preprint since August) measured oxygen in 37 nearby dwarf galaxies and found they keep only 4–25% (about 11% on average) of the oxygen their stars made, nearly all of it in gas. Simulations predict several times more. Supernova-driven winds are the likely culprit; where the oxygen ended up is still unknown. Gas data included CSIRO's Australia Telescope Compact Array. CHAPEA 2: a year on a pretend Mars NASA's second CHAPEA crew, Ross Elder, Ellen Ellis, Matthew Montgomery and James Spicer, left the 3D-printed Mars Dune Alpha habitat at Johnson Space Center on 31 October after 378 days, including communication delays of up to 22 minutes. An integrated HERA-plus-CHAPEA study is planned for 2027. Can a black hole split in two? A theory paper in Physical Review D (Cacciapaglia, Del Piano, Sannino & Vellucci, 22 October; preprint June) finds a split is thermodynamically allowed only, possibly, for black holes spinning near the maximum rate. The splitting process itself remains unknown, and no split has been observed. Quick hits Swift's final re-entry (see episode for status at recording); Starship Flight 15 targeted 12 November on an FAA planning slide, no SpaceX date yet; BepiColombo Mercury orbit capture 21 November; Voyager 1 one light-day from Earth around 18 November. Skywatch ESCAPADE telescope challenge over Australia (Sat 8:51 p.m. and Mon 9:51 p.m. AEDT); New Moon 9 Nov; Taurid fireballs; Mars and Jupiter closing to about 1.2° on 16 Nov (UT); thin crescent Moon under 1° from Venus around 10:45 UT on 7 Nov, best from eastern North America; Venus about 1.2° from Spica on the mornings of 9–10 Nov; Mercury at greatest western elongation 20 Nov. Never look at the Sun without ISO 12312-2 certified protection. Sources NASA ESCAPADE blog: Twin ESCAPADE spacecraft to slingshot past Earth (2 Nov 2026) — https://science.nasa.gov/blogs/escapade/2026/11/02/nasas-twin-escapade-spacecraft-to-slingshot-past-earth-on-way-to-mars/ NASA SVS ESCAPADE flyby star charts — https://svs.gsfc.nasa.gov/15114/ JPL Horizons System — https://ssd.jpl.nasa.gov/horizons/app.html#/ UC Berkeley ESCAPADE mission timeline — https://escapade.ssl.berkeley.edu/timeline-news Blue Origin: New Glenn launches NASA's ESCAPADE (13 Nov 2025) — https://www.blueorigin.com/en-US/news/new-glenn-launches-nasa-escapade-lands-fully-reusable-booster NASA: Hubble uncovers case of missing oxygen in nearby dwarf galaxies (2 Nov 2026) — https://science.nasa.gov/missions/hubble/nasas-hubble-uncovers-case-of-missing-oxygen-in-nearby-dwarf-galaxies/ McQuinn et al., GLOW II: A Census of Oxygen in Low-Mass Galaxies, ApJ, DOI 10.3847/1538-4357/ae93a6 (preprint arXiv 2608.07665) — https://arxiv.org/abs/2608.07665 NASA: CHAPEA crew 'returns' to Earth (31 Oct 2026) — https://www.nasa.gov/image-article/nasas-chapea-crew-returns-to-earth/ University of Southern Denmark: Can a black hole split in two? — https://www.sdu.dk/en/om-sdu/fakulteterne/naturvidenskab/nyheder-2026/black-hole-in-two Cacciapaglia, Del Piano, Sannino & Vellucci, Phys. Rev. D 114, 084072 (22 Oct 2026), DOI 10.1103/cx69-t466 — https://journals.aps.org/prd/abstract/10.1103/cx69-t466 NASA Swift blog: Swift Observatory to re-enter atmosphere (2 Nov 2026) — https://science.nasa.gov/blogs/swift/2026/11/02/nasas-swift-observatory-to-re-enter-atmosphere/ Starlust: Starship Flight 15 FAA planning date — https://starlust.org/spacex-starship-flight-15-possible-launch-date-revealed/

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Wednesday SpaceTime 20261104 Series 29 Episode 132

A cosmic blast’s dazzling glow hints at a monster in hiding Astronomers say a seemingly ordinary flash of gamma rays followed by an unusually bright afterglow is pointing to a powerful stellar monster lurking out of sight. Coronal mass ejections discovered erupting from a black hole Astronomers have for the first time, discovered an event similar to a coronal mass ejection blasting out of a Black hole. Virgin Galactic unveils its new Delta Class Space Plane Virgin Galactic has formally unveiled the first of its new next generation Delta class spaceplanes at its New Mexico Space Port. The Science Report Exposure to bushfires while pregnant linked to kids being later diagnosed with autism. Antarctic Intermediate Water rapidly reversing is long-term trends in salinity and density. Paleontologists have discovered the remains of a new species of herbivorous dinosaur. Bans on smartphones in schools shown not to have had any impact on teen mental health. Alex on Tech: cracks in the success of Apples new Iphone Duo.

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Show notes Swift's Last Orbit: NASA's burst hunter falls home, a gamma-ray burst that is two explosions in one, and 3I/ATLAS's dusty ice. Swift's Last Orbit NASA's Neil Gehrels Swift Observatory is expected to re-enter Earth's atmosphere on Wednesday 4 November; the US Space Force prediction is about 03:30 EST (08:30 UTC, 19:30 AEDT), plus or minus 11 hours. Surviving fragments are confined between 20.6°N and 20.6°S, a band that includes northern Australia; NASA puts the risk of harm to anyone at about 1 in 2,100. We look back at 22 years of science from a two-year mission: more than 2,000 gamma-ray bursts, the first short-burst afterglow in 2005, the BOAT in 2022, and about 7,000 papers. Two Bursts, Two Births GRB 160425A, caught by Swift in April 2016, is a 1.7-second short spike, four minutes of silence, then a 51-second long burst from the same place. A Nature Astronomy paper (Li, Wang, Zhang, Cai et al., 23 October; preprint March) argues the first is merger-like and the second collapsar-like. One event, no confirmed supernova or kilonova. 3I/ATLAS's Dusty Ice Webb's NIRSpec found the interstellar comet's ice grains are about a micron across and mixed with lots of dust, resembling some trans-Neptunian objects more than familiar comets (Protopapa et al., ApJL, 26 October; preprint September). Quick Hits Starship Flight 15 targeted NET 12 November per the FAA (unconfirmed by SpaceX); BepiColombo's Mercury orbit insertion on 21 November; Voyager 1 reaches one light-day around 18 November. Skywatch Venus near Spica before dawn, joined by a 5%-lit crescent Moon on Saturday 7 November; Mars and Jupiter closing to 1.2° by 16 November (high from the north); Saturn high in southern evening skies; New Moon 9 November; Leonids 17–18 November. ISO 12312-2 solar safety

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Show notes

Two black holes caught feeding side by side just 1.3 billion years after the Big Bang. JWST and ALMA confirm LID-1166, the first close dual AGN found beyond the nearby universe. Plus: Swift's final days and NASA's call for ideas to save Hubble, Rubin finds Neptune's missing trailing Trojans as Lucy enters Jupiter's, TRACERS' first look at where the solar wind gets in, and a both-hemispheres skywatch built around the Mars-Jupiter meeting on 16 November. Two Hearts in One Galaxy (LID-1166) JWST/NIRSpec integral-field spectroscopy resolves two feeding black holes ~1.5 kpc (~4,900 ly) apart at z~4.5; ALMA [CII] finds matching cold gas around each. Both appear super-Eddington yet already sit on the local black hole-host mass relation. One system, projected separation; preprint posted July, published in Nature Astronomy this week. Living on Borrowed Altitude Swift ended operations on 20 October and is expected to re-enter in early November. NASA's 29 October Request for Information asks industry about boosting, servicing or safely de-orbiting Hubble, likely to re-enter in 2033-34. Not a commitment; responses due 30 November. Trojan Week Rubin early data confirms 2025 MH348 and 2025 NN80 as long-lived trailing Neptune Trojans, plus candidate 2025 MD138 (Schwamb et al., ApJL). Lucy becomes the first spacecraft to enter the Jupiter Trojan region; Eurybates flyby 11 August 2027. TRACERS: Where the Solar Wind Gets In First results (JGR: Space Physics) suggest cusp reconnection is largely spatial rather than temporal. Mission extended to spring 2027. Quick hits BepiColombo Mercury orbit insertion 21 November; Starship Flight 15 targeted November with a double catch attempt; Voyager 1 one light-day from Earth around 18 November. Skywatch Mars and Jupiter 1.2 degrees apart before dawn on 16 November; Venus, a thin Moon and Spica low at dawn 7-10 November; Saturn high in southern evenings; zodiacal light around New Moon (9 Nov); Leonids 17-18 November; supermoon 24 November. ISO 12312-2 solar safety reminder.

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