Rubin telescope should find more of Earth's mysterious 'mini-moons' — including some we can study up close

space.com Oct 26, 2026

Rubin telescope should find more of Earth’s mysterious ‘mini-moons’ — including some we can study up close

Curated by Shubham · TechCapsules · Oct 26, 2026

AI-summarised brief · reviewed before publication

Researchers presented new estimates that Earth’s temporary satellites, or “mini‑moons,” are far more common than previously confirmed. Grigori Fedorets of the University of Helsinki explained that a typical mini‑moon, about 75 cm across, remains in geocentric orbit for roughly nine months and completes three revolutions before escaping. Modeling predicts a 3‑meter object should be captured every 10‑20 years, yet only two have been verified—2006 RH120 and 2020 CD3. The Vera C. Rubin Observatory’s Legacy Survey of Space and Time is expected to detect one mini‑moon every two years, a rate that could rise to two or three annually using a dedicated ANTARES‑based alert system. Increased detections would enable cubesat sample‑return missions and help resolve discrepancies in Earth asteroid population models, including the scientific origin of lunar‑ejecta fragments.

💡 Why It Matters

· Because mini‑moons can be reached with far less propellant than traditional asteroids, they offer the cheapest stepping stones for sample‑return and resource‑utilization experiments, accelerating near‑Earth exploration.

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‘More missions, more often’: NASA is overhauling how it selects science missions

NASA announced Competition Model 2.0 (CM 2.0) to overhaul science‑mission selection, aiming to cut costs, shorten timelines, and prioritize scientific merit over early engineering detail. The new process reduces the initial proposal burden, shortens the 35‑month cycle to about 19½ months for many programs, and introduces a single‑stage selection for the smallest missions. CM 2.0 applies to Explorer, Discovery, New Frontiers, Astro‑Probe, MIDEX, Earth Explorer, SMEX, and Earth Venture programs, while flagship missions retain the current procedure.

💡 By streamlining evaluation and lowering entry barriers, CM 2.0 could accelerate the launch of diverse, cost‑effective missions, expanding scientific output and fostering broader participation from universities and commercial partners.

space.com · Oct 26

SpaceX ignites giant Super Heavy booster engines ahead of daring Starship launch…

SpaceX conducted a 15‑second fire of Super Heavy booster B22 on Oct. 25, igniting all 33 Raptor 3 engines as part of checks for Flight Test 15. The booster will be mated with upper stage Ship 42, which is also undergoing engine fire and systems verification. Flight 15 aims to attempt the first tower‑catch of the Ship stage, step toward Starship reusability. The mission follows Flight 14’s orbital debut, which delivered 26 Starlink V3 satellites but suffered an upper‑stage engine shutdown. Although a payload for Flight 15 has not been confirmed, SpaceX is positioning Starship to replace Falcon 9 for V3 deployments and to meet NASA’s Artemis lunar‑lander milestones. The test suggests a launch window in November, with milestones including a Florida launch and a booster re‑flight before year‑end.

💡 Demonstrating a tower‑catch would

spacenews.com · Oct 26

Astranis Upgrades Falcon 9 Launch Contract to Dedicated Mission for Entire Block…

Astranis announced on Oct. 26, 2026 that its fourth launch will be upgraded to a dedicated SpaceX Falcon 9 mission in 2028, carrying the entire Block 4 production run of six MicroGEO satellites. The payload will use an Impulse Helios upper stage to perform direct‑inject placement into geostationary orbit, expanding the company’s fleet to 16 satellites after adding to the ten already deployed in Blocks 1‑3. The amendment replaces a 2024 contract that allotted only shared capacity, giving Astranis full use of the rocket’s payload. Block 4 customers, both commercial and governmental, have been pre‑signed and will be disclosed later. The launch supports Astranis’ strategy to meet rising demand for dedicated high‑orbit infrastructure, including communications and space‑domain‑awareness services. Shows strong investor backing and growing customer trust.

💡 By securing a full‑payload Falcon 9 slot, Astranis can deliver an entire satellite block in one launch, accelerating the rollout of dedicated GEO capacity for governments and enterprises that demand sovereign control.

space.com · Oct 26

‘More missions, more often’: NASA is overhauling how it selects science missions

NASA announced Competition Model 2.0, a revamp of its science‑mission selection process aimed at cutting costs and shortening timelines. The new framework, outlined by associate administrator Nicky Fox, shifts early evaluation toward scientific merit and defers detailed engineering and budget work until later stages. For Discovery, New Frontiers, Astro‑Probes and similar mid‑size programs, required proposal material will be cut roughly in half, shrinking the typical 35‑month cycle to about 19.5 months. Flagship missions retain their existing procedures, while the smallest missions—Small Explorer, Earth Venture, and rideshare opportunities—move to a single‑stage review, collapsing a 32‑month timeline to roughly 19 months. The changes open participation to more universities and commercial firms and promise faster delivery of research payloads.

💡 By front‑loading scientific value and trimming bureaucracy, NASA aims to launch a higher volume of missions in a shorter span, accelerating data return and keeping U.S. space research competitive amid a booming commercial sector.

quantumcomputingreport.com · Oct 25

Monarch Quantum Supplies Integrated Photonics for Next Phase of NASA and Infleqtion’s…

San Diego‑based Monarch Quantum announced it will supply integrated photonics hardware for Infleqtion’s Quantum Gravity Gradiometer Pathfinder (QGGPf) mission, a NASA‑led effort to launch the first space‑based quantum gravity‑gradient sensor by 2030. The program, managed by JPL, builds on the GRACE satellite‑to‑satellite tracking legacy and will use ultracold rubidium atom interferometry to map minute changes in Earth’s gravity, enabling measurement of groundwater loss, ice‑sheet melt and subsurface shifts. Monarch’s photonics subsystems combine lasers, micro‑optics, fiber routing and control electronics in rugged enclosures, addressing the size, weight and power constraints of spaceflight. By handling optical packaging, Monarch lets Infleqtion concentrate on atomic physics, magnetic shielding and detectors. The engineering development unit will be tested at Germany’s Einstein‑Elevator drop‑tower before final qualification.

💡 Monarch’s turnkey photonics removes a critical integration hurdle, speeding deployment of quantum gravity sensors that could deliver unprecedented, real‑time insight into Earth’s water and ice dynamics.

space.com · Oct 25

October’s ‘Hunter’s Moon’ stalks into the autumn sky tonight: Here’s what you…

Tonight the October full moon reaches 100 % illumination at 12:12 a.m. EDT (0412 GMT) on Oct. 26, offering a classic “Hunter’s Moon” view for Northern‑hemisphere observers. The lunar disk will rise in the eastern sky at sunset on Oct. 25, appearing unusually large near the horizon due to the “Moon Effect” and often taking on a yellow‑orange hue as blue light scatters through Earth’s atmosphere. With the terminator absent, the bright seas of basaltic plains become prominent, while fresh crater ejecta may be seen as faint streaks. The name derives from post‑harvest hunting traditions, and Indigenous peoples refer to it as the Migrating or Freezing Moon. Stargazers can track exact rise times via online tools, and Space.com invites readers to submit photographs for publication.

💡 The event offers a vivid, real‑time illustration of atmospheric optics and cultural lunar lore, sparking broader public interest in astronomy.