September 29 – October 5, 2025 / Hawai`i Island, USA
Vol 44, No 39: Lunar Broadcast Precursor: Terrestrial Edition
76th International Astronautical Congress Convenes in Sydney, Australia for Sustainable Space Imperatives

The 76th IAC runs September 29 to October 3 at International Convention Centre Sydney, drawing ~7,000 delegates from 100+ nations. Organized by International Astronautical Federation (IAF) since 1950, this edition has theme Sustainable Space: Resilient Earth. With 4,100 research abstracts accepted from 6,400 submissions and over half of the attendees being under the age of 35, IAC2025 highlights Asia-Pacific innovation, youth engagement and cross-industry ties. Plenaries include One-to-One with Heads of Space Agencies – which includes ESA, CSA, NASA, ISRO, JAXA, CNSA, many others – and The International Community’s Return to the Moon with Blue Ghost Chief Engineer Will Coogan and Ben Greenhagen of JHU-APL. A ‘Special Session’ is on the Artemis Accords. Bernard Foing gives Symposium Keynote Space Renaissance for All. Speakers include Lunar Outpost Founder / CEO Justin Cyrus, Vast CEO Max Haot on Commercial Success in Space, Philip Diamond of the Square Kilometre Array Observatory, Eric Salwan of Firefly Aerospace, Angel Abbud-Madrid on space resource utilization and Quentin Parker on space computing. ‘Technical Programme’ includes Sophia Casanova (ispace) on Tenacious lunar rover. Oct 4 Public Space Day expects 5,000+ for Astronaut meet-and-greets. 250 exhibitors foster Indo-Pacific, Asia partnerships for space sustainability, exploration, technology. There are many official adjacent events. (Image Credits: IAC)
Advance NASA Science for Brilliant Human Manifestation, Give Equal Funding with DoD
Day of Action to Save NASA Science is being called this year by founder The Planetary Society and 10 additional organizations, including from the American Space Movement: American Astronautical Society, American Geophysical Union, AIAA and National Space Society. With expectation for a Continuing Resolution, preparation on Oct 5 leads to meetings Oct 6 in Washington DC congressional offices to lobby for NASA appropriations. US$25B for NASA is a high-return investment, generating 300,000+ jobs, ~US$75B in economic impact and ~US$9B in taxes, while costing only ~0.4% of USA total budget. Incredible space telescopes and crafts like Perseverance, Juno, Cassini and Voyager advance understanding of our Solar System, interstellar space, galaxies and more. Satellites enable GPS and assist disaster response and farmers. 2,000+ NASA science spinoffs include memory foam, water purification technology and LEDs. NASA-backed Blue Origin project provides cleaner solar-cell manufacturing, with hopes to do it on Moon to cut landing costs ~60%. ISS 25-year multinational hub fosters microgravity research for medical advances and enables a path toward Moon exploration. Buzz Aldrin praises the inspiration of NASA spaceflight. If the DoD and NASA each received US$0.5T, the exponential gains could take humans half-way through Solar System if not the Galaxy. (Image Credits: NASA)
HUMANS IN SPACE
International Space Station, ~415-km LEO: Expedition 73 seven-member crew is set to continue through December 2025 under command of Sergey Ryzhikov (Roscosmos); crew is focusing on science research, maintenance, tech demos including eye exams, upgrading computer networking gear and unpacking ~5,000 kg of cargo from Northrop Grumman Cygnus cargo mission (CRS-23).
Tiangong Space Station, ~390-km LEO: Shenzhou 20 three-member crew performing exercises related to bodily conditioning for return to Earth (planned at end of Oct), working with experiments involving artificial brain models, high-temperature superconducting materials, and live outreach sessions with students; checking results of recent space debris installations after 6-hour EVA last week.
Lunar News: Weekly lunar advisories [coming soon]
Near-Earth Objects Close Approaches – Tues Sep 30: Apollo Asteroid 2025 SA3 (0.017 AU); Wed Oct 1: Apollo Asteroid 2025 QL23 (0.018 AU); Sun Oct 5: Apollo Asteroid 2018 SP1 (0.033 AU).
First Women Land on the Moon in…
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2025
Events
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2nd Academic Symposium on Chang’E-8 Mission Scientific Exploration and Research
Chengdu, Sichuan Province, ChinaDuring this prototype R&D period, the Forum aims to verify the scientific objectives of the payload and ground testing operations... -
Robotic Telescopes in Education Conference
Hobart, Tasmania, Australia -
The Solar System in Context Conference
Tucson AZ, USAThe Solar System in Context Toward an interconnected perspective on the formation and evolution of the Solar System, exoplanetary systems, and... -
International Finals of IISL Manfred Lachs Space Law Moot Court Competition
Sydney, AustraliaOver 100 law schools from five global regions participate, held concurrently with 76th IAC. -
76th International Astronautical Congress: Sustainable Space – Resilient Earth
Sydney, AustraliaExpecting 4,500+ delegates; Jeff Bezos to be given World Space Award. -
Launch Electron / JUSTIN
SLC-2, ~38°N, Wallops Flight Facility VA, USASub-orbital launch under Rocket Lab Hypersonic Accelerator Suborbital Test Electron (HASTE) program for USA government payload. Estimated launch cost: US$6,000,000. -
NASA Science Mission Directorate briefing on ROSES-25 A.10 INNOVATE proposal
Online / Washington DC, USAROSES-25 A.10 INNOVATE Preproposal Conference September 30, at 2 pm Eastern Time. ROSES-2025 A.10 INNOVATE solicits proposals to rapidly advance the... -
Inventing Tomorrow: Imagining the Space Observatories of the Future
Lawndale CA, USAEvening Town Hall meeting of the Los Angeles Section of the American Institute of Aeronautics and Astronautics; with Jonathan Arenberg,... -
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National Aeronautics and Space Administration (NASA) First Business Day Observation
Nationwide USANationwide celebrations and educational events occur to observe NACA (National Advisory Committee for Aeronautics) first business day as newly-formed National... -
Nominations Due: 2026 Kavli Prize in Astrophysics
OnlineUS$1,000,000 award; astrophysics categories include planetary science, 9 others. -
Launch Falcon 9 / Project Kuiper (KF-03)
SLC-40 (~28°N), Cape Canaveral SFS FL, USAThe 3rd of 3 launches for Amazon Kuiper low Earth orbit satellite internet constellation. -
AIAA SF: Young Professionals Happy Hour
Mountain View CA, USAAll ages welcome! Come and join your colleagues and friends in the aerospace profession in a relaxed atmosphere. Network over a... -
100-hour marathon of astronomy events and activities
OnlineDedicated to the 100th anniversary of the 1st planetarium. -
Launch Falcon 9 / Starlink Group 11-39
SLC-4E (~35°N), Vandenberg SFB CA, USAAnother batch of 28 satellites for SpaceX Starlink internet communications mega-constellation. -
International Observe the Moon Night 2025
WorldwideFor observation, appreciation, understanding of the Moon / its connection to planetary science / exploration; 1st quarter Moon is best... -
SAS Sydney Space Architecture Symposium
Sydney, AustraliaIAC Adjacent Event; includes live demo of lunar habitat construction; at University of New South Wales Kensington -
NASA Space Apps Challenge
Worldwide48-hour hackathon in French and English for space enthusiasts, programmers, designers, engineers, entrepreneurs and students; 2800+ local events and online -
World Space Week
WorldwideCelebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space... -
Robopalooza Australia 2025 Perth
Perth, Australia2nd annual ROBOPALOOZA.space festival will take place at the Australian Automation and Robotics Precinct (AARP), feature Student and Business Innovation... -
The Day of Action to Save NASA Science
Washington DC, USATo facilitate meetings between individuals and their elected officials to push back against proposed cuts to NASA science funding in... -
Astronomical Heritage of the Middle East 2 (AHME-2)
Byurakan, Armenia2nd international conference on astronomy in culture, astrochemistry, astrobiology, astrogeology, archaeoastronomy.
