Explore Mars's annual Humans to the Moon and Mars (H2M2) Summit will take place July 21-23, 2026. For the first time it will be held at Rice University in Houston, TX rather than in Washington, DC. More information is on the event's registration website.

The 2026 NASA Exploration Science Forum (NESF) will take place at NASA's Ames Research Center in Mountain View, CA from July 21-23, 2026. More information is on the event's website, which says:

The Maryland Space Business Roundtable (MSBR) will hold a luncheon on July 22, 2026 at Martin's Crosswinds in Greenbelt, MD from 11:30 am-1:00 pm ET. The speaker is Minh Nyugen, FAA Deputy Associate Administrator, Commercial Space Transportation. More information is on the event's website.  

The Committee on Space Research (COSPAR) will hold its 2026 Scientific Assembly in Florence, Italy from August 1-9, 2026. More information and the agenda are on the COSPAR website. An emailed announcement on September 22, 2025 provided a list of topics that will be addressed, as follows:    

The 2026 Taiwan Lunar Symposium will take place August 9-13, 2026 at Sun Moon Lake, Taiwan. More information is on the event's website.

The 4th Texas Area Planetary Science (TAPS) meeting will take place at the University of Texas at Austin in Austin, TX from August 20-21, 2026. More information is in the announcement in the March 8, 2026 Planetary Exploration Newsletter, Vol 20, No 10, which says: TEXAS AREA PLANETARY SCIENCE MEETING We are excited to announce …

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The 40th Small Satellite Conference will take place August 23-26, 2026 at the Salt Palace Convention Center in Salt Lake City, Utah. More information is on the event's website, which says: The Clouds Above the Clouds Celebrating 40 Years of Collaboration Over the past four decades, the small satellite community has transformed from a dedicated …

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The 3rd International Academy of Astronautics (IAA) Conference on AI for Space will take place in Jeju, Republic of Korea, from August 26-28, 2026. More information is on the event's website:

September 7, 2026 is a U.S. Federal holiday, Labor Day.  Government offices will be closed. According to the Department of Labor: “Observed the first Monday in September, Labor Day is an annual celebration of the social and economic achievements of American workers. The holiday is rooted in the late nineteenth century, when labor activists pushed for …

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The Air and Space Forces Association's (AFA's) 2026 Air, Space & Cyber Conference will take place at the Gaylord National Resort and Convention Center in National Harbor, MD from September 14-16, 2026. A virtual option is available. More information is on the event's website, which says (as of May 9, 2026):  

The 2026 Advanced Maui Optical and Surveillance (AMOS) Technologies Conference will take place September 15-18, 2026 on Maui, Hawaii. A virtual option is available. More information is on the event's website, which says: The AMOS (Advanced Maui Optical and Space Surveillance Technologies) Conference is the premier technical conference in the nation devoted to space situational …

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The 2026 International Observe the Moon Night will take place globally on September 19, 2026. More information is on NASA’s Observe the Moon website.

The 2026 Texas Space Summit will take place at the Henry B. Gonzalez Convention Center in San Antonio, TX from September 21-23. 2026. More information is on the event's website, which says:

SpaceCHI, "the world's first conference dedicated to advancing human-computer interaction in space exploration," will take place September 24-25, 2026 at NASA's Ames Conference Center Building 3, 500 Severyns Ave., Moffett Field, CA (near Mountain View). More information is on the event's website.

World Space Week takes place every year from October 4-10 to mark the beginning of the Space Age on October 4, 1957 with the launch of Sputnik by the Soviet Union and the entry into force of the U.N. Outer Space Treaty on October 10, 1967. Events take place globally and World Space Week has …

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The 2026 International Astronautical Congress (IAC) will take place in Antalya, Türkiye from October 5-9, 2026. More information is on the IAC website.

October 12, 2026 is a U.S. Federal holiday. The Office of Personnel Management refers to this as Columbus Day, honoring Christopher Columbus who is often cited as discovering the New World of the Americas in 1492. Beginning in 2021, others began referring to this as Indigenous Peoples’ Day honoring the indigenous peoples — Native Americans …

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UP/LINK: The SpaceTech Business Summit will take place in New York City from October 20-21, 2026. More information is on the event's website, which says: A November 18, 2025 email adds:  

The National Security Space Association (NSSA) will hold its 2026 International Security Space Forum at Boeing's offices in Arlington, VA from October 20-21, 2026. More information is on the event's website.

The 58th meeting of the American Astronomical Society's Division for Planetary Sciences (DPS) will take place October 25-30, 2026 in Spokane, Washington. More information is on the event's website.