EON wants to move the data superhighway from ocean fiber to space lasers

As global hyperscalers continue to expand their data center footprints, the challenge of moving massive volumes of data across the globe has become increasingly acute. Currently, this digital traffic relies heavily on a complex, often fragile web of undersea fiber-optic cables. These subsea conduits are notoriously difficult to install, access, and repair, creating a bottleneck for the modern internet. While radio-based wireless alternatives have been explored, they lack the necessary bandwidth to compete with fiber. Now, a new startup is looking to the stars for a solution: space-based lasers.

Endeavour Optical Networks (EON), a startup that emerged from stealth today, is betting that laser-equipped spacecraft can bridge the gap between continents. The company has secured $10.75 million in seed funding from prominent venture capital firms General Catalyst and Andreessen Horowitz to turn this vision into reality.

The Challenge of Orbital Throughput

Founded in May, EON is led by CEO Charlie Horowitz and CTO Tyler Presser. Their mission is to build a satellite network capable of linking data centers directly from orbit. While satellite internet has become more common, most existing constellations are not designed for the extreme throughput required by modern AI labs and hyperscalers.

"Most satellite communications networks, even those that provide broadband internet service, aren’t robust enough to carry data at 200 terabits a second or more, the speed of undersea fiber."

However, the landscape is shifting. NASA has successfully utilized laser communications for deep-space data transmission, and private entities like York, Kepler, and Cailabs have demonstrated Earth-to-orbit links. While these current demonstrations typically target throughputs around 2.5 Gbps, EON is aiming significantly higher. Horowitz notes that the company’s initial goal is a throughput of 2.4 terabits per second, a massive leap forward for space-based data transit.

Engineering a Solution for Atmospheric Interference

The primary hurdle for laser communications is the atmosphere. Signals can be severely distorted by weather conditions, particularly cloud cover. To overcome this, EON plans to deploy a constellation of approximately 20 satellites. This fleet will provide dedicated, 24-hour connectivity between continents.

The company’s strategy involves a sophisticated approach to ground infrastructure:

• Strategic Ground Stations: EON will carefully select ground sites in diverse regions to serve local data centers and Content Delivery Networks (CDNs).
• Redundancy: By leveraging real-time weather data and redundant ground locations, the network aims to ensure reliable, high-uptime links.
• Targeted Routes: The company plans to focus on underserved or high-cost routes, such as the long-distance connection between France and Australia, or regions lacking robust existing infrastructure, like the corridor between Africa and South America.

Building the Future of Connectivity

EON intends to use its seed capital to establish an optics laboratory, expand its engineering team, and conduct rigorous ground testing. The ultimate milestone is the launch of a demonstration satellite, currently targeted for the end of 2027. Horowitz anticipates that this inaugural spacecraft will achieve the highest optical downlink throughput ever recorded, potentially reaching between 800 gigabits and one terabit per second.

The technical execution will rely on a mix of custom innovation and off-the-shelf efficiency. EON plans to focus its internal resources on the "exquisite" components—specifically the gimbals required for precise laser pointing—while utilizing proven, powerful satellite buses from manufacturers like Apex Space.

The team behind EON is well-equipped for this challenge. Beyond the co-founders, the technical bench includes:

• Michael David Francois: A veteran Google executive with deep experience in global network infrastructure.
• Wesley Baxter: An optics engineer who previously contributed to Amazon’s LEO satellite network.

Industry Perspective and Competition

EON is not alone in its ambition. Blue Origin, the space venture founded by Jeff Bezos, has announced TeraWave, a massive 5,048-satellite network designed to provide speeds of up to 6 Tbps. While Blue Origin’s plan is more expansive, it also faces a longer timeline for full deployment. EON’s smaller, more focused fleet may offer a faster path to market, though the technical challenges remain formidable.

Caleb Henry, director of research at Quilty Space, offers a grounded perspective on the industry’s trajectory:

"Data centers have high standards for quality and redundancy. Satellite internet is just now progressing from a technology of last resort to dependable, high-bandwidth infrastructure. That’s not to say it will be impossible to make satellites optimized for data center connectivity, just that it will be harder and take longer than most entrepreneurs suggest."

Despite these hurdles, EON remains focused on immediate, practical applications rather than speculative concepts like orbital data centers. For Horowitz, the business case is simple: the volume of data moving across the globe is growing exponentially, and the current terrestrial infrastructure is struggling to keep pace.

"We have one rule at the company: no physics problems," Horowitz says. "There’s a market that exists today that we can go serve. Down the road, we’ll go and take on more as it comes, but we know that this is a problem that exists today, that’s only getting worse. That’s our bet—more data is moving terrestrially than ever."