Name: National Aeronautics and Space Administration (NASA) First Business Day Observation
Start: 2025-10-01T00:00:00-10:00
End: 2025-10-01T23:59:59-10:00
Location: Nationwide USA

September 2025

Wed Sep 10 @ 4:00 pm CDT

RSVP DUE: Artemis II mission briefings for media (to be held Sep 23-24)

Organizer: National Aeronautics and Space Administration (NASA)

Sun Sep 14 - Tue Sep 16

8th Annual EMER-GEN® Program

Maui HI, USA

Organizer: Space Generation Advisory Council (SGAC)

$345 – $445

Sun Sep 14 - Fri Sep 19

39th International Electric Propulsion Conference (IEPC): Electric Propulsion, a Gateway to the Cosmos

London, United Kingdom

Organizer: Imperial College London

Mon Sep 15 - Wed Sep 17

Mercury Laboratory Workshop 2025

Helsinki, Finland

Organizer: European Space Agency (ESA)

Mon Sep 15 - Wed Sep 17

Binary Asteroids Meeting VI

Observatoire de la Côte D’Azur Nice, France

Organizer: Nice Observatory

Mon Sep 15 - Fri Sep 19

World Space Business Week

Paris, France

Organizer: Novaspace

€660 – €3600

Mon Sep 15 - Fri Sep 19

ExMAG Fall 2025 Meeting

Houston TX, USA

Organizer: Lunar and Planetary Institute (LPI)

Mon Sep 15 @ 8:00 am - 1:00 pm EDT

“Save NASA” at NASA Headquarters in Washington DC, 300 E St SW, Mary W Jackson Building

Washington DC, USA

Organizer: National Space Society (NSS)

Mon Sep 15 @ 11:00 am - Wed Oct 22 @ 2:00 pm EDT

Online Short Course: Spacecraft Design, Development and Operations

Reston VA, USA

Organizer: American Institute of Aeronautics and Astronautics (AIAA)

$1395

Tue Sep 16

11th GEGSLA operational meeting

Online / Vienna, Austria

Organizer: Moon Village Association (MVA)

Tue Sep 16 - Thu Sep 18

20 Years Celebration of the Huygens Landing and the Cassini Mission

Meudon, France

Organizer: European Space Agency (ESA)

Tue Sep 16 - Fri Sep 19

26th Advanced Maui Optical and Space (AMOS) Surveillance Technologies Conference

Maui HI, USA

Organizer: Maui Economic Development Board

$950

Wed Sep 17

Juno Perijove 76 / 75th Science Flyby

Jupiter Orbit

Organizer: National Aeronautics and Space Administration (NASA)

Wed Sep 17

Launch Falcon 9 / Starlink Group 17-12

SLC-4E, Vandenberg SFB CA, USA United States Space Force Base, Santa Barbara County, CA, United States

Organizer: SpaceX

Wed Sep 17

Launch Falcon 9 / Starlink Group 10-61

SLC-40, Cape Canaveral SFS FL, USA Cape Canaveral Space Force Station, Brevard County, FL, United States

Organizer: SpaceX

Wed Sep 17 @ 12:00 pm - 1:30 pm EDT

Webinar: Shortfalls of Food Production in Space and Future Needs

Online

Organizer: Beyond Earth Institute

Wed Sep 17 @ 3:00 pm - 4:00 pm CDT

Former NASA Astronaut Jose Hernandez Speaks at University of North Dakota

Grand Forks ND, USA

Organizer: University of North Dakota (UND)

Wed Sep 17 @ 6:00 pm - 11:00 pm HST

Maryland Space Business Roundtable: 24th Annual Fall Reception and Lecture

National Air and Space Museum 6th Street and Independence Ave SW, Washington DC, DC, United States

Organizer: Maryland Space Business Roundtable (MSBR)

Thu Sep 18

Lunar Surface Innovation Consortium (LSIC) Crosscutting Capabilities Telecon

Online

Organizer: Johns Hopkins University Applied Physics Lab (JHU-APL)

Thu Sep 18

Launch New Shepard / NS-35

West Texas Suborbital Launch Site / Corn Ranch, Van Horn TX, USA Launch Site One (LSO), Van Horn, TX, United States

Organizer: Blue Origin

Thu Sep 18 @ 1:00 pm - 2:30 pm EDT

Navigating the New Space Policy Landscape: What the Latest Executive Order Means for Your Business

Online

Organizer: Beyond Earth Institute

Fri Sep 19

The Space Show: Interview with Dean Cheng

Online

Organizer: The Space Show

Fri Sep 19 @ 11:00 am - 12:30 pm CDT

Human Spaceflight Risk Lecture Series Part 5: Dr. Erik Antonsen

Online

Organizer: Organzation for Space Medicine, Engineering and Design (OSMED)

$50 – $250

Sat Sep 20

Launch Falcon 9 / Starlink Group 10-27

SLC-40, Cape Canaveral SFS FL, USA Cape Canaveral Space Force Station, Brevard County, FL, United States

Organizer: SpaceX

Sun Sep 21

Mars Atmosphere and Volatile EvolutioN (MAVEN) Marks Another Year in Mars Orbit

Mars Orbit

Organizer: National Aeronautics and Space Administration (NASA)

Mon Sep 22 - Tue Sep 23

Fundamentals of Space Vehicle Mechanisms

Lausanne, Switzerland

Organizer: Launchspace Services

Mon Sep 22 - Wed Sep 24

11th International Conference on Space Technology Innovation: Exploring Lunar New Home

Shanghai, China

Organizer: International Academy of Astronautics (IAA)

Mon Sep 22 - Thu Sep 25

Workshop on Tomography of Planetary Materials: X-Rays and Beyond

Austin TX, USA

Organizer: Lunar and Planetary Institute (LPI)

Mon Sep 22 @ 12:30 pm - 1:30 pm UTC-4

NASA Selects 2025 Astronaut Candidates

Online / Washington DC, USA

Organizer: National Aeronautics and Space Administration (NASA)

Mon Sep 22 @ 5:00 pm - 5:30 pm EDT

Firefly Aerospace to Announce 2nd Quarter 2025 Financial Results

Online

Organizer: Firefly Aerospace

Mon Sep 22 @ 6:19 pm - 6:20 pm UTC

September Equinox

Worldwide

Organizer: Sun-Earth

Tue Sep 23

NET Sep 23 — Launch Falcon 9 / IMAP, Carruthers & Follow On L1

SLC-39A, Kennedy Space Center FL, USA

Organizer: SpaceX

Tue Sep 23 - Thu Sep 25

AstroEdu: Bridging Research and Practice, Astronomy Education 2025

Melbourne, Victoria, Australia

Organizer: Research for Educational Impact (REDI)

Tue Sep 23 - Thu Sep 25

9th International Conference on Space Science and Communication (IconSpace 2025)

Malacca, Malaysia

Organizer: Space Science Centre (ANGKASA)

Tue Sep 23 - Thu Sep 25

42nd International Communications Satellite Systems Conference (ICSSC) and its Colloquium

Barcelona, Spain

Organizer: American Institute of Aeronautics and Astronautics (AIAA)

Tue Sep 23 @ 11:00 am - 2:00 pm UTC-4

NASA news conference on the Artemis II Moon mission

Online

Organizer: National Aeronautics and Space Administration (NASA)

Wed Sep 24 - Fri Sep 26

21st European Space Mechanisms and Tribology Symposium (ESMATS2025)

Lausanne, Switzerland

Organizer: European Space Agency (ESA)

Wed Sep 24 @ 10:00 am - 11:00 am UTC-4

NASA news conference with the Artemis II astronauts

Online

Organizer: National Aeronautics and Space Administration (NASA)

Thu Sep 25 - Sat Sep 27

Space Generation Congress 2025

Sydney, Australia

Organizer: Space Generation Advisory Council (SGAC)

Thu Sep 25 @ 11:00 am - 4:30 pm EDT

Surface Power Workshop: Lunar Power Applications at Various Scales

Online

Organizer: Lunar Surface Innovation Consortium (LSIC)

Free

Thu Sep 25 @ 1:00 pm - 3:00 pm EDT

Live Chat with Veteran NASA Astronaut Leland Melvin

Online

Organizer: Astronaut Scholarship Foundation (ASF)

Free

Thu Sep 25 @ 6:00 pm - 7:30 pm PDT

AIAA SF Tech Talk: Performance Analysis and Data Processing for the Mars Sample Recovery Helicopter in the Jet Propulsion Laboratory 25-ft Space Simulator

Mountain View CA, USA

Organizer: American Institute of Aeronautics and Astronautics (AIAA)

Free

Fri Sep 26

Abstracts Due: 2025 LSIC Fall Meeting (being held Nov 5-6)

Online

Organizer: Lunar Surface Innovation Consortium (LSIC)

Fri Sep 26 - Sun Sep 28

UNOOSA Workshop: Resilient Coasts, Resilient Earth: Innovative Space Solutions for Coastal Resilience Emergency Management

Sydney, Australia

Organizer: United Nations Office of Outer Space Affairs (UNOOSA)

Sat Sep 27

Fall Astronomy Day 2025

Worldwide

Organizer: The Astronomical League

Sat Sep 27 - Mon Sep 29

2nd Academic Symposium on Chang’E-8 Mission Scientific Exploration and Research

Chengdu, Sichuan Province, China

Organizer: Lunar Exploration and Space Engineering Center of the Chinese Academy of Sciences

Sun Sep 28

IAA Academy Day 2025

Sydney, Australia

Organizer: International Academy of Astronautics (IAA)

Sun Sep 28

The QUAD Industry Networking Series

Sydney, Australia

Organizer: Indo-Pacific Space & Earth Network

Sun Sep 28

Astrosat Marks Another Year in Space

Low Earth Orbit (LEO)

Organizer: Indian Space Research Organisation (ISRO)

Sun Sep 28 - Wed Oct 1

Robotic Telescopes in Education Conference

Hobart, Tasmania, Australia

Organizer: Robotic Telescopes Student Research and Education Conference (RTSRE)

Sun Sep 28 @ 9:00 am - 5:00 pm AEST

Global Spaceport Alliance (GSA) International Spaceport Forum

Sydney, Australia

Organizer: Global Spaceport Alliance (GSA)

Mon Sep 29

NET Sep 29 — Launch New Glenn / Escape and Plasma Acceleration and Dynamics Explorers (EscaPADE)

SLC-36A, Cape Canaveral SFS FL, USA

Organizer: Blue Origin

Mon Sep 29 - Thu Oct 2

The Solar System in Context

Tucson AZ, USA

Organizer: National Optical-Infrared Astronomy Research Laboratory (NOIRLab)

Mon Sep 29 - Thu Oct 2

The Solar System in Context Conference

Tucson AZ, USA

Organizer: National Optical-Infrared Astronomy Research Laboratory (NOIRLab)

Mon Sep 29 - Fri Oct 3

International Finals of IISL Manfred Lachs Space Law Moot Court Competition

Sydney, Australia

Organizer: International Institute of Space Law (IISL)

Mon Sep 29 - Fri Oct 3

76th International Astronautical Congress: Sustainable Space – Resilient Earth

Sydney, Australia

Organizer: International Astronautical Federation (IAF)

Tue Sep 30 @ 2:00 pm - 5:00 pm UTC-7

NASA Science Mission Directorate briefing on ROSES-25 A.10 INNOVATE proposal

Online / Washington DC, USA

Organizer: National Aeronautics and Space Administration (NASA)

Tue Sep 30 @ 5:30 pm - 7:30 pm UTC-7

Inventing Tomorrow: Imagining the Space Observatories of the Future

Lawndale CA, USA

Organizer: American Institute of Aeronautics and Astronautics (AIAA) Los Angeles Section

October 2025

Wed Oct 1

Nominations Due: 2026 Kavli Prize in Astrophysics

Oslo, Norway

Organizer: Norwegian Academy of Science and Letters

Wed Oct 1

National Aeronautics and Space Administration (NASA) First Business Day Observation

Nationwide USA

Organizer: National Aeronautics and Space Administration (NASA)