Venus Aerospace closes $91 million Series B to scale hypersonic engine

flight funding

Venus Aerospace has secured funding from Mercury Fund, Lockheed Martin Ventures and others. Photo courtesy Venus Aerospace

Houston-based Venus Aerospace has closed a $91 million Series B round and plans to scale the production of its hypersonic engine.

The round was led by Houston-based Mercury Fund with participation from Lockheed Martin Ventures, MESH, PEAK6, Draper Associates, Starboard Star Venture Capital, Green Sands Equity and other investors, according to a news release.

The investment comes about a year after Venus completed the first U.S. flight test of its high-thrust rotating detonation rocket engine (RDRE). The engine is expected to enable vehicles to travel four to six times the speed of sound from a conventional runway and is about 15 percent more efficient than traditional alternatives, according to the company.

Venus Aerospace says the latest round of funding will allow it to move the RDRE from demonstration to deployment and meet customer requirements for the near-term defense and space industries. The company says that the reusable RDRE is designed with a "common propulsion architecture" that can work for multiple industries and mission types.

“This financing marks an important step in moving Venus from breakthrough demonstration to scaled capability,” Sassie Duggleby, co-founder and CEO, said in the news release. “Our customers need propulsion systems that go farther, can be produced reliably and are built on supply chains they can trust. We are advancing that capability with American engineering and manufacturing talent to strengthen U.S. defense, expand space access and support the future of high-speed flight.”

Venus Aerospace raised a $20 million Series A in 2022, led by Wyoming-based Prime Movers Lab. At the time, the company said it would put the funding toward three main technologies: a next-generation rocket engine, aircraft shape and leading-edge cooling system.

The company also picked up an investment from Lockheed Martin Ventures, the investment arm of aerospace and defense contractor Lockheed Martin, in November 2025—in addition to funding from other investors over the years.

“Since our initial investment, Venus has progressed very quickly in its technology development," Chris Moran, vice president and general manager of Lockheed Martin Ventures, added in the release. "Our reinvestment in Venus recognizes Venus’ accomplishments to date and focus on speed to manufacture, cost management and reduction of supply chain constraints. Venus is working effectively to position its propulsion system for the production scale required by defense programs.”

"Venus is exactly the kind of company Houston capital should be backing," Blair Garrou, co-founder and managing partner at Mercury Fund, added in the release. "It combines multiple frontier technologies, domestic manufacturing and clear commercial and national security relevance. We believe this team is positioned to lead an important new chapter in defense and space, and we are proud to support a company building breakthrough technology here in Texas."

Venus Aerospace and Houston clean tech startup Vaulted Deep were named to the World Economic Forum's Technology Pioneers community earlier this summer. Read more here.

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Two Houston startups have been named World Economic Forum Technology Pioneers. Photo courtesy Venus Aerospace

Houston cleantech, space startups named to World Economic Forum cohort

top honor

Two Houston-based startups have been selected to join the World Economic Forum's Technology Pioneers community.

The two-year program aims to help mission-driven, early-stage start-ups scale their innovations through multi-stakeholder initiatives, co-creating partnerships and other gatherings for community members. One-hundred startups are selected each year from around the globe, this year hailing from 23 countries and working in AI, energy, space, biotech markets and more.

Cleantech startup Vaulted Deep was one of 11 energy and climate companies to be named to the cohort. Julia Reichelstein and Omar Abou-Sayed founded the company in 2023. Its technology injects excess organic waste underground to remove carbon dioxide from the atmosphere.

Last year, Vaulted Deep inked a 12-year deal with Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

The startup has earned several accolades in recent years, including a No. 3 spot on Fast Company’s list of the World’s Most Innovative Companies of 2026. It was also recently named to market intelligence and advisory firm Cleantech Group's annual Global Cleantech 100 list for a second year in a row.

"Waste management is one of the world's great invisible infrastructure systems ... The need for new infrastructure is growing as disposal challenges become more complex and regulations evolve. Vaulted is building the first new disposal pathway for organic waste in decades by putting it deep underground, permanently," the company shared in a LinkedIn post. "This year, we're joining the World Economic Forum's 2026 Tech Pioneers alongside innovators working on the many interconnected challenges shaping our future."

Houston-based Venus Aerospace was also selected to join the cohort, along with six other spacetech companies. The company was founded in 2020 by Sassie and Andrew Duggleby.

The startup specializes in next-generation rocket engine propulsion as a cleaner alternative to traditional combustion engines. The company's rotating detonation rocket engine (RDRE) burns fuel more efficiently and completed a successful high-thrust test flight last year. Venus says it’s the only company in the world that makes a flight-proven, high-thrust RDRE with a “clear path to scaled production.”

"Frontier technologies matter most when they expand what people, industries, and nations can do," Sassie Duggleby, co-founder and CEO of Venus, said in a news release. "For Venus, RDRE does not just represent a more efficient engine. It is a foundation for faster movement, more capable space systems, and new forms of connectivity across the planet. Being named a Technology Pioneer validates the potential of this technology to help shape a future where distance is less limiting."

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This article originally appeared on our sister site, EnergyCapitalHTX.com.

Houston founders Laureen Meroueh, LaToshia Norwood, Sassie Duggleby, Nina Magon, Stephanie Murphy and Lauren Rottet were named to Inc. Magazine's 2026 Female Founders 500. Photos via LinkedIn and company websites

6 Houston entrepreneurs land on coveted Inc. Female Founders 500 list

the future is female

Six Houston female entrepreneurs and innovators were named to the 2026 Female Founders 500 list.

The annual list compiled by Inc. Magazine recognizes female founders based in the U.S. who have built businesses that have moved their industries forward. The group collectively generated approximately $12.3 billion in 2025 revenue and $12.2 billion in funding to date, according to Inc. Five Houstonians were named to the list last year.

"Each year, we are increasingly amazed by the extraordinary leaders on our Inc. Female Founders 500 list," Bonny Ghosh, editorial director at Inc., said in a news release. "The honorees on this year's list include innovators in AI, beauty and wellness trendsetters winning devoted fans, and nonprofit leaders making a real impact in their communities. Together, they're showing all of us what trailblazing female leadership looks like."

The Houston founders are:

Sassie Duggleby, CEO and co-founder of Houston space tech and engine company Venus Aerospace. Duggleby also serves on the Texas Space Commission board of directors.
Stephanie Murphy, CEO and executive chairman of Aegis Aerospace, which provides space services, spaceflight product development, and engineering services. Murphy also serves as chair of the Texas Aerospace Research and Space Economy Consortium Executive Committee.
Laureen Meroueh, CEO and founder of Hertha Metals, which has developed a cost-effective and energy-efficient process that converts low-grade iron ore of any format directly into molten steel or high-purity iron in a single step.
LaToshia Norwood, managing partner of L'Renee & Associates (LRA), a full-service project management consulting firm.
Lauren Rottet, president and founding principal of Rottet Studio, an international architecture and design firm focused on corporate, lifestyle and hospitality projects
Nina Magon, founder and CEO of Nina Magon Studio / Nina Magon Consumer Products, a residential and commercial interior design company. She also co-founded KA Residences earlier this year.

"Grateful to be recognized again on the Inc. Female Founders 500," Duggleby said in a LinkedIn post. "The best part of building Venus Aerospace has been working with an incredible team pushing the boundaries of flight—and helping bring more women into aerospace along the way.

Meroueh, whose company emerged from stealth last year, voiced a similar push for bringing more women into the fold.

"We've seen a 7x jump in female-led IPOs over the last decade, from just two in 2014 (less than 1% of all IPOs) to 14 in 2024 (nearly 9% of all IPOs). Progress is happening," Meroueh shared in a LinkedIn post. "Yet, less than 1% of venture funding in hard tech goes to female-founded companies. But as my friend Ana Kraft says, the right man for the job may be a woman."

Twenty-nine Texas female founders made this list, including Amber Venz Box, founder of the Dallas-based LTK shopping platform, and Cheryl Sew Hoy, CEO and founder of Austin-based Tiny Health, a fast-growing at-home microbiome health platform. See the full list of winners here.

Lockheed Martin Ventures says it's committed to helping Houston-based Venus Aerospace scale its technology. Photo courtesy Venus Aerospace

Venus Aerospace picks up investment from Lockheed Martin Ventures

space funding

Venus Aerospace, a Houston-based startup specializing in next-generation rocket engine propulsion, has received funding from Lockheed Martin Ventures, the investment arm of aerospace and defense contractor Lockheed Martin, for an undisclosed amount. The product lineup at Lockheed Martin includes rockets.

The investment follows Venus’ successful high-thrust test flight of its rotating detonation rocket engine (RDRE) in May. Venus says it’s the only company in the world that makes a flight-proven, high-thrust RDRE with a “clear path to scaled production.”

Venus says the Lockheed Martin Ventures investment reflects the potential of Venus’ dual-use technology for defense and commercial uses.

“Venus has proven in flight the most efficient rocket engine technology in history,” Venus co-founder and CEO Sassie Duggleby, a board member of the Texas Space Commission, said in a news release. “With support from Lockheed Martin Ventures, we will advance our capabilities to deliver at scale and deploy the engine that will power the next 50 years of defense, space, and commercial high-speed aviation.”

Chris Moran, executive director and general manager of Lockheed Martin Ventures, said Lockheed Martin has been a longtime supporter of early-stage “transformational” technologies.

“Our investment in Venus Aerospace reflects a conviction that next-generation propulsion will define which nations lead in space and defense for decades to come,” Moran added in the release. “We are committed to helping Venus scale this technology and integrate it into critical systems.”

Since its founding in 2020, Venus has secured more than $106 million in funding. In addition to Lockheed Martin Ventures, investors include Airbus Ventures, America’s Frontier Fund, Trousdale Ventures, and Prime Movers Lab. Supporters of Venus include NASA, the Air Force Research Lab and the Defense Advanced Research Projects Agency (DARPA).

From insightful talks to a young professionals summit, here's what not to miss and how to register. Photo via Getty Images

11 can't-miss Houston business and innovation events for August

where to be

Editor's note: The tech event scene is heating up in August. From insightful talks to a young professionals summit, here's what not to miss and how to register. Please note: this article may be updated to include additional event listings.

Aug. 5 – Tech and Tequila Talk

Hear from guest speaker David Cohen, founder & CEO of Dallas-based Superposition, at the latest installment of Tech and Tequila Talk. The event will focus on breaking down ambiguity in data and AI projects through collaborative workshops.

This event takes place Tuesday, Aug. 5, from 5-7 p.m. at the Ion. Click here to register.

Aug. 11-16 – Black is Tech Week

Black is Tech Week will bring events for tech professionals, entrepreneurs and students to Houston through summits, career fairs, networking events and more. The event will feature speakers from Amazon, Microsoft, Google and many other companies.

This event begins Monday, Aug. 1. Find more information here.

Aug. 12 – NASA Stories at the Ion

Head to the Ion for the new morning series spotlighting the human side of space exploration. Each session will feature personal and powerful stories from astronauts and key NASA personnel. Anthony Vareha, NASA Flight Director and Flight Operations Directorate, whose primary duty is the safe operation of the International Space Station will speak this month.

This event begins Tuesday, Aug. 12, from 8:30-10 a.m. Find more information here.

Aug. 14 – Pickle Lab’s One-Year Anniversary Celebration

Enjoy an afternoon of open-play pickleball, beats by a live DJ, raffle giveaways and free swag at the first anniversary celebration of Pickle Lab in the Ion District. WonderPops will provide complimentary pops while supplies last, and Second Draught will serve each guest a free beverage.

This event takes place Thursday, Aug. 14, from 4-7 p.m. RSVP here.

Aug 19 – Navigating the Economy: Insights from Darren King

Darren King, chief investment officer of Moody Bank, will share his expert insights on the state of the economy and its impact on Houston’s future. Gain a deeper understanding of market trends, economic shifts and what they mean for businesses and individuals in the city.

This event takes place Tuesday, Aug. 19, from 11:30-1 p.m. RSVP here.

Aug. 21 – Transition on Tap

Greentown Labs’ signature networking event returns in August to foster conversations and connections within Houston's climate and energy transition ecosystem. Entrepreneurs, investors, students, philanthropists and more are invited to attend, meet colleagues, discuss solutions and engage with the growing community.

This event takes place Thursday, Aug. 21, at 5:30 p.m. at Greentown Labs. Click here to register.

Aug. 22 – Determined to Lead Women Lunch: Investing Through Market Cycles with Ellen Wilkirson

EnergyTech Nexus hosts a monthly Determined to Lead Women’s Lunch as part of its ongoing efforts to create safe spaces for women leaders in the energy transition to connect, learn and lead. The August session features Ellen Wilkirson, principal at Rev Innovations. With deep experience across traditional and transition energy sectors, Wilkirson will share how she’s approached investing through multiple market and commodity cycles and what it means to be a clean energy investor in today’s evolving landscape.

This event takes place Friday, Aug. 22, at 1 p.m. Click here to register.

Aug. 26 – Software Day at the Ion: Positioning your Startup to Capitalize on Market Trends

Software Day is a monthly series driving the support, inspiration and connections needed to help startups on their path to rapid, sustainable growth. Each month, Software Day will include office hours (by application), a keynote session and networking. This month’s panel discussion will feature Remington Tonar, co-founder of Cart.com, and Josh Teekell, founder of SmartAC.com.

This event takes place Tuesday, Aug. 26, from 3:30-7 p.m. Click here to register.

Aug. 27 – Future of Flight: Inside Venus Aerospace with Founder Sassie Duggleby

Join EO Houston for an exclusive, behind-the-scenes conversation with Sassie Duggleby, co-founder and CEO of Venus Aerospace, a Houston-based company pioneering breakthrough propulsion systems for hypersonic and space applications.

This event takes place Wednesday, Aug. 27, at 10 a.m. at Venus Aerospace. It is open to EO members and partners only. Click here to register.

Aug. 27 – The Future of American Science: A Conversation With US Rep. Brian Babin

U.S. Rep. Dr. Brian Babin and Paul Cherukuri, vice president of innovation at Rice University, will discuss how the United States remains at the forefront of space exploration, emerging technologies and scientific advancement, as well as what's next and what's at stake for the future of science policy.

This event takes place Wednesday, Aug. 27, from 3-4 p.m. at James A. Baker III Hall on Rice University's campus. Click here to register.

Aug. 28 – HYPE Summit

The third annual Houston Young Professionals and Entrepreneurs (HYPE) Summit is a day-long conference featuring panel discussions with business and thought leaders, workshop-style breakout sessions and networking opportunities. This year's event—under the theme Step Into the Spotlight—will feature speakers from First Bight Ventures, Bot Auto, Regions Bank, Lopez Negrete Communications and Umbrage.

This event takes place Thursday, Aug. 28, from 8:30 a.m.-5:30 p.m. at The Hobby Center for the Performing Arts. Click here to register.

Venus Aerospace successfully completed the flight test of its hypersonic engine, the first of an American-developed engine of its kind. Photo courtesy Venus Aerospace

Houston aerospace co. soars with first U.S. test flight of hypersonic engine

taking off

Houston-based Venus Aerospace successfully completed the first U.S. flight test of its proprietary engine at a demonstration at Spaceport America in New Mexico.

Venus’ next-generation rotating detonation rocket engine (RDRE) is supported by a $155,908 federal Small Business Innovation Research (SBIR) grant from NASA and aims to enable vehicles to travel four to six times the speed of sound from a conventional runway. The recent flight test was the first of an American-developed engine of its kind.

"With this flight test, Venus Aerospace is transforming a decades-old engineering challenge into an operational reality,” Thomas d'Halluin, managing partner at Airbus Ventures, an investor in Venus, said in a news release. “Getting a rotating detonation engine integrated, launch-ready, and validated under real conditions is no small feat. Venus has shown an extraordinary ability to translate deep technical insight into hardware progress, and we're proud to support their bold approach in their attempt to unlock the hypersonic economy and forge the future of propulsion."

Venus’ RDRE operates through supersonic shockwaves, called detonations, that generate more power with less fuel. It is designed to be affordable and scalable for defense and commercial systems.

The RDRE is also engineered to work with the company's air-breathing detonation ramjet, the VDR2, which helps enable aircraft to take off from a runway and transition to speeds exceeding Mach 6. Venus plans for full-scale propulsion testing and vehicle integration of this system. Venus’ ultimate goal is to develop a Mach 4 reusable passenger aircraft, known as the Stargazer M4.

"This milestone proves our engine works outside the lab, under real flight conditions," Andrew Duggleby, Venus co-founder and chief technology officer, said in the release. "Rotating detonation has been a long-sought gain in performance. Venus' RDRE solved the last but critical steps to harness the theoretical benefits of pressure gain combustion. We've built an engine that not only runs, but runs reliably and efficiently—and that's what makes it scalable. This is the foundation we need that, combined with a ramjet, completes the system from take-off to sustained hypersonic flight."

The hypersonic market is projected to surpass $12 billion by 2030, according to Venus.

"This is the moment we've been working toward for five years," Sassie Duggleby, CEO and co-founder of Venus Aerospace, added in the release. "We've proven that this technology works—not just in simulations or the lab, but in the air. With this milestone, we're one step closer to making high-speed flight accessible, affordable, and sustainable."

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Walmart expands drone delivery service to 8 new Houston-area stores

Now Landing

More Walmart delivery drones are now buzzing around Houston-area skies.

In January, Walmart launched its drone delivery service in partnership with Wing at five locations in the Houston area. The retail giant just added eight more stores to its Houston-area drone delivery network.

Wing says the expansion makes drone delivery available to more than 1 million residents of the Houston area. “Many can now bypass notorious Houston traffic to get everyday Walmart essentials delivered by drone in minutes,” Wing said in a release.

The eight Walmart stores that joined the drone delivery network are:

13003 Tomball Pkwy. Houston
12353 FM 1960 Rd. West, Houston
2901 Riley Fuzzel Rd., Spring
20310 U.S. Highway 59, New Caney
1025 Sawdust Rd., Spring, TX 77380
13484 Northwest Fwy., Houston, TX
13750 East Fwy., Houston
3506 Highway 6 South, Houston

Stores where drone delivery was already available are:

14215 FM 2100 Rd., Crosby
1313 N. Fry Rd., Katy
15955 FM 529 Rd., Houston
255 FM 518, Kemah
6060 N. Fry Rd., Katy

Houstonians can learn whether their address is eligible for drone delivery from a Walmart store by visiting wing.com/walmart. Drone-delivered orders can be placed on the Walmart app, the Wing app, or at Walmart.com.

Once an order is ready, it’s loaded onto a delivery drone. The drone then flies up to 60 mph and at a cruising altitude of about 150 feet to reach the customer’s home. The average flight takes less than 5 minutes.

Once it arrives at the customer’s home, the drone stops, hovers at roughly 23 feet, and lowers the order via a tether. Wing says its drones gently lower orders to the ground to protect fragile items like eggs and coffee.

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This article originally appeared on CultureMap.com.

TMC expands Korea BioBridge, welcomes 12 biotech companies to Houston

welcome to hou

The powerful partnership between Texas Medical Center (TMC) innovation and the world of Korean biotech advancement is already growing in scope. Just six months after the new TMC Republic of Korea BioBridge was first announced, 12 new companies from the Republic of Korea will establish on-site presences in Houston to further collaboration between the two nations and medical industries.

The expansion comes from a new agreement between TMC and the Korea Health Industry Development Institute (KHIDI). William McKeon, president and CEO of Texas Medical Center, applauded the move and predicted it would benefit both Houston and Korea immensely.

“Korea has established itself as a global leader in biohealth innovation, with a growing pipeline of breakthrough technologies across digital health, biotechnology, and medical devices,” McKeon said in the news release. “Through the TMC Korea BioBridge, we are creating a direct connection between Korea’s innovators and the world’s largest medical city. This collaboration between TMC and KHIDI provides companies with a place to establish a presence, build strategic relationships, engage with leading clinicians and researchers, and accelerate the path toward commercialization and patient impact in the United States.”

The companies that will be in residence at the TMC Innovation Factory include Ardens Lifescience, whose new CAROL device is currently in human trials tackling lung cancer by using the airway network as electrodes to perform bronchoscopic ablation; stem cell-based gene therapy firm CELLeBRAIN, currently working on neurological disorders and solid cancers; and Wellysis, the developer of the S-Patch wearable cardiac monitoring device.

Additional companies include:

Antigravity
ARPI
CTCELLS
elecell
HUVER Inc.
Hutom
ORGANOIDSCIENCES
YOUTH BIO GLOBAL
Seoul Medical Informatics Intelligence Lab Inc.

“This collaboration establishes a strong foundation for connecting Korea’s biohealth innovation ecosystem with world-class clinical and innovation resources in the United States,” Younghun Jeong, executive director of the KHIDI, added in the news release. “Through partnerships with Texas Medical Center and the Korean-American Medical Association Texas, we look forward to fostering meaningful collaboration among innovators, clinicians, and industry leaders while creating new opportunities for clinical validation, commercialization, and global growth. KHIDI remains committed to expanding global partnerships that support biohealth innovation, clinical collaboration, commercialization, and international growth.”

This is the seventh international strategic partnership for the TMC. It launched its first BioBridge with the Health Informatics Society of Australia in 2016. It launched its TMC Japan BioBridge, focused on advancing cancer treatments, last year. It also has BioBridge partnerships with the Netherlands, Ireland, Denmark and the United Kingdom.

24 Houston-based companies named best places to work by U.S. News

Best Places to Work

A new U.S. News & World Report ranking of the best employers has named 95 Texas companies among the best companies to work in the South, and two dozen of them are based right here in the Houston metro.

U.S. News' prestigious "2026-2027 Best Companies to Work For" ratings examine 3,900 public and privately owned companies across 14 industries to help employees and job seekers make decisions about workplaces that may be a good fit.

Each company is rated on a scale of 1-5 across six metrics: quality of pay and benefits; work-life balance and flexibility; job and company stability; physical and psychological comfort; belongingness and esteem; and career opportunities and professional development.

"Job seekers' definitions of 'best' evolve with their needs," said Carly Chase, vice president of Careers at U.S. News. "From new grads in the AI era and seasoned pros seeking a career change, to HR leaders researching organizational trends, the ratings are a central hub that highlights businesses that U.S. News found effectively support their staff."

The number of employers headquartered in the Houston area that made the cut for 2026-2027 has skyrocketed over previous years. A total of 24 local public and private companies made the list this year, up from 16 companies in 2024 and 11 in 2025.

The highest concentration of top employers is located in Houston proper (20), followed by two companies in The Woodlands and one each in Kingwood and Spring.

A few familiar names Houstonians will recognize include petroleum corporation Occidental (Oxy), oil and gas giant Chevron, electrical engineering and manufacturing company Powell Industries, and home builder David Weekley Homes.

Here are the remaining best Houston-based companies to work for:

PROS, Houston
EOG Resources, Houston
Targa Resources, Houston
TechnipFMC, Houston
Cheniere, Houston
DXP, Houston
Comfort Systems USA, Houston
Corebridge, Houston
Baker Hughes, Houston
KBR, Houston
CenterPoint Energy, Houston
Phillips 66, Houston
S&B, Houston
Cornerstone Home Lending, Houston
Farouk, Houston
Hines, Houston
Insperity, Kingwood
HPE, Spring
Sterling Infrastructure, The Woodlands
LGI Homes, The Woodlands

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