Ax-1 is headed back to Earth after 12 days of research on the ISS. Photo courtesy of SpaceX

Editor's note: Undocking was delayed again on April 19, and a new timeline has not been announced. The original story is below.

After spending 12 days in space, a historic commercial space mission will splash back down on Earth this week.

Houston-based Axiom Space’s first mission Axiom mission 1 (Ax-1), which took off April 8 and connected to the International Space Station, has announced its plans for undocking and splashdown.

After some initial bad weather postponed the process, the four-member private astronaut crew now is aiming to undock at about 9 pm tonight, April 19, and then land off the coast of Florida at around 2:24 pm tomorrow, April 20. Just like launch, the coverage of both events will be available at Axiom's website.

The mission on SpaceX’s spacecraft sent four multinational private astronauts — Commander Michael López-Alegría, Pilot Larry Connor, Mission Specialist Eytan Stibbe, and Mission Specialist Mark Pathy — to the ISS to conduct research and familiarize Axiom with launch, docking, and more.

Axiom Space, which reached $1 billion valuation and joined the Houston unicorn club last year after a $130 million investment round, is working on the first commercial space station to replace the ISS. The first launch of that mission is expected in late 2024. In the meantime, Axiom has a series of commercial launches to the existing station currently in orbit in order to prepare for development and orchestration of Axiom Station.

The Ax-1 mission, which has provided daily updates, has conducted over 20 research projects and even hit a few milestones, including:

  • The first-ever music duet performance in space — Commander López-Alegría and Neo-Classical Piano Prodigy BLKBOK made music and space history with their piano and keyboard duet
  • The Aging and Heart Health investigation, an experiment from the Mayo Clinic — a study that analyzes human cells for genetic markers of cellular aging and explores cardiac-like cells' adaptation to microgravity
  • Observation of Transient Luminous Events — Specialist Stibbe completed a space observation experiment and photographed a lightning storm over Darwin, Australia, to enhance understanding of the electrical processes in the atmosphere and to determine whether there’s a connection with climate change
  • Testing of the Holoportation system — Mission Specialist Pathy set up two-way AI technology that will allow the ability of future crew members to explore deep space with the ability to virtually bring friends, family, and physicians close with them so that they can get an on-Earth experience
  • Several outreach calls to Earth to STEM students from around the world — this included a call to children at Space Center Houston

Axiom shares more details on its mission research projects — which span technologies such as future space habitats, cancer research, and devices to purify air on space stations — online.

“As the first step on a path to building a diverse, thriving economy in low-Earth orbit, Axiom has partnered with leaders in academia and industry to bring new users and new investigations in research to the space station,” says Christian Maender, director of In-space Manufacturing and Research for Axiom Space, in a news release. “The collection of biological and technological tests during the Ax-1 mission represent a breadth of research that will inform everything from human health considerations to novel infrastructure and design for our future homes away from Earth, beginning with Axiom Station.”

The four-person crew spent 12 days on the ISS. Photo courtesy of NASA

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6+ can't-miss Houston business and innovation events in March

where to be

Editor's note: March brings the return of some of Houston’s signature innovation events, plus insightful talks and celebrations in honor of Women's History Month. Here’s what not to miss and how to register. Please note: this article may be updated to include additional event listings.

March 3-4 — Houston MedTech Rodeo

Head to Armadillo Palace for the annual Houston MedTech Rodeo. The casual, Texas-themed conference brings together 350 medtech professionals who come from over 10 countries and 15 states to highlight Houston's growing medtech ecosystem. The event will feature panel discussions, startup showcases, networking sessions—plus, armadillo races, mechanical bull riding and live country music.

The event begins March 3 at Armadillo Palace on Kirby Drive. Register here.

March 4 – Humans of Healthcare

Houston Methodist Center for Innovation will present its new quarterly speaker series, Humans of Healthcare. The series will feature a panel of experts who will share about their career paths and discuss the nuances of the health care industry. This month's session will focus on IT. The panel will be moderated by Houston Methodist's Director of Innovation Murat Uralkan.

The event is Wednesday, March 4, from 5-6 p.m. at the Ion. Register here.

March 5 — The Future of Women in STEM

Celebrate Women's History Month at SUPERGirls SHINE Foundation's The Future of Women in STEM event, presented in partnership with the Ion. The event will feature speakers and panelists, including Kalila Winters Hines, senior public affairs advisor for Holland & Knight; Dr. Natacha Chough, NASA Johnson Space Center Flight Surgeon; and Andrea Course, rocket scientist and founder of Course Investments.

The event is Thursday, March 5, from 8:30-10 a.m. at the Ion. Register here.

March 10-12 — World Hydrogen & Carbon Americas

S&P Global Energy brings together two leading events—Carbon Management Americas and World Hydrogen North America—to form a new must-attend event for those in the hydrogen and carbon industries. More than 800 senior leaders from across the energy value chain will attend this event featuring immersive roundtable discussions, hands-on training, real-world case studies and unparalleled networking opportunities.

This event begins March 10 at the Marriott Marquis Houston. Register here.

March 20 — Ideas to Impact Accelerator Graduation and Showcase

Join Impact Hub Houston as it celebrates its inaugural Ideas to Impact Accelerator cohort. The 16-week accelerator is designed to help early-stage entrepreneurs validate their business models, strengthen confidence and gain traction. Hear short pitches and network with founders and mentors.

The event is Friday, March 20, from noon-2 p.m. at the Ion. Register here.

March 23-27 — CERAWeek 2026

CERAWeek 2026 will focus on "Convergence and Competition: Energy, Technology and Geopolitics." The industry's foremost thought leaders will convene in Houston to cultivate relationships and exchange transformative ideas during the annual event. CERAWeek 2026 will explore breakthroughs, cross-industry connections and powerful partnerships that are accelerating the transformation of the global energy system. 2026 highlights include an appearance by tech magnate Bill Gates.

This event begins March 23. Register here.

March 24-25 — 2026 Energy Venture Day and Pitch Competition

The Energy Venture Day and Pitch Competition, co-hosted by the Rice Alliance, Ion, HETI and TEX-E, offers two days of exciting pitches from more than 40 global energy ventures that are transforming the industry. On Tuesday, March 24, you can attend a fast-paced pitch preview event at the Ion, followed by the official Pitch Competition at 1 pm on Wednesday, March 25, at the George R. Brown Convention Center.

March 30-April 4 — H-Town Roundup

Celebrate innovation, entrepreneurship and collaboration at Houston Exponential's sixth-annual H-Town Roundup. During the free event series, previously known as Houston Tech Rodeo, attendees can expect insightful talks, workshops and networking events at venues across the city.

This event begins Monday, March 30. Register here.

Intuitive Machines secures $175M equity investment to fuel growth

space funding

Houston-based space infrastructure and services company Intuitive Machines has secured a $175 million equity investment from unidentified institutional investors. The investors received shares of Class A stock in exchange for their funding.

Publicly held Intuitive Machines (Nasdaq: LUNR) says it plans to use the capital to help build revenue and invest in technology, including communications and data-processing networks.

“We are building a scalable infrastructure platform from low-Earth orbit to the moon and into deep space,” Intuitive Machines CEO Steve Altemus said in a news release. “With this investment, we can accelerate the integration of the combined company’s collective capabilities to deliver next-generation data, communications, and space-based infrastructure services.”

Intuitive Machines says the $175 million investment will improve its ability to secure deals for satellite systems, the proposed Golden Dome missile defense system and the proposed Mars telecommunications orbiter.

As the company pursues those deals, it’s seeking partners to develop space-based data centers.

The $175 million equity stake comes on the heels of Intuitive Machines completing its $800 million cash-and-stock purchase of Lanteris Space Systems. Intuitive Machines bought the satellite manufacturer from private equity firm Advent International.

In the third quarter, which ended Sept. 30, Intuitive Machines posted a $10 million net loss on revenue of $52.4 million.