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Portal Space Raises $50M For Solar Propulsion

Innovative Vision Rooted In Aerospace Expertise

Jeff Thornburg, a former engineer at the U.S. Air Force and SpaceX, is developing propulsion systems at Portal Space Systems. The company was founded in 2021. Portal Space Systems raised $50 million in a Series A round, reaching a valuation of $250 million. Investors include Geodesic Capital, Mach33, Booz Allen Ventures, ARK Invest, AlleyCorp, and FUSE.

Revolutionizing Propulsion With Solar Thermal Technology

Solar thermal propulsion is being developed as an alternative to chemical and electric systems. Government laboratories have studied the concept since the 1960s. Concentrated solar energy is used to heat propellant, increasing thrust and maneuverability. Demand has grown alongside rising satellite deployments and defense-related requirements.

Strategic Investment And Military Interest

Portal Space Systems has received $45 million in funding linked to U.S. military programs, in addition to $67.5 million in private capital. Investors are evaluating applications in commercial satellite operations and defense scenarios, including spacecraft maneuverability in orbit.

Navigating The Path To Operational Flight

Portal is testing flight electronics in orbit and plans to launch a prototype spacecraft in October. A fully operational propulsion system is targeted for deployment by 2027 on the SuperNova spacecraft. The system includes a Hex thruster combining a solar concentrator and nozzle in a single unit.

Looking Beyond Today: Preparing For Future Propulsion Systems

Solar thermal propulsion is positioned as an alternative to nuclear systems, which face regulatory and technical constraints. In-orbit testing is being used to validate components, reducing reliance on ground-based infrastructure.

Industry Context

Demand for advanced propulsion systems continues to grow as satellite activity increases and orbital congestion expands. Portal Space Systems is developing technology focused on maneuverability, efficiency, and scalability in space operations.

Starbucks Wins ‘Best Workplace / Employer Of Choice At The 18th IN Business Awards

Starbucks was recently awarded the ‘Best Workplace / Employer of Choice’ award at the 18th IN Business Awards in Greece — a recognition that reflects the company’s philosophy and its ongoing investment in its people.

This distinction confirms Starbucks’ commitment to creating a work environment defined by respect, collaboration, inclusivity, and equal opportunities for all. Starbucks consistently fosters a culture that encourages growth, authenticity, and participation since people are always at the center.

“At Starbucks, our success is rooted in our people. This recognition is a testament to our team’s dedication to nurturing a space where everyone can express themselves, grow equally, and deliver exceptional experiences to our customers,” said Pambis Anastasis — District Manager of Starbucks, who received the award.

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Through modern development and employee support practices, Starbucks meaningfully invests in the continuous training and empowerment of its workforce, offering learning opportunities, mentorship, and career advancement at every stage of their journey.

The company also promotes an inclusive workplace where every employee feels a sense of belonging, can express themselves freely, and grow equally. This approach is a core element of Starbucks’ identity and is reflected both in the company’s internal culture, and in the experience it delivers to customers.

Winning at the prestigious IN Business Awards is a great honor for Starbucks and serves as a strong affirmation that its people are always at the heart of every step it takes.

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