Why VLEO

Location, location, location.

The ultimate blue ocean is about 250 kilometers up. Very low Earth orbit (VLEO) is the one layer that touches both: close enough to see what happens on the surface, and the first stop on the way to every orbit above it.

Closer to Earth

What changes when you fly lower.

VLEO’s advantages are emergent. Proximity is the fact; everything else follows from it.

01 · PROXIMITY

Closer. Sharper sensing from smaller sensors.

At about 250 km, a DeepSat satellite is roughly twice as close to the ground as a satellite in typical low Earth orbit. Signal strength falls with the square of distance, so the same radio closes a link with about four times the margin, and the same optics resolve detail that higher orbits need exquisite apertures to match. That is why the constellation can fly commercial sensors and current-generation GPUs. For you, the picture arrives sharper, sooner, from equipment that keeps improving.

DISTANCE: About half that of typical low Earth orbit
LINK MARGIN: About four times, from the same radio
OPTICS: Detail that higher orbits need exquisite apertures to match
HARDWARE: Commercial sensors and current-generation GPUs

02 · RESILIENCE

Below the crowd. An orbit that cleans itself.

A satellite in VLEO feels atmospheric drag, and that drag is doing something useful: anything that stops station-keeping re-enters within months rather than decades. Debris does not accumulate, a compromised or obsolete asset ages out on a known schedule, and a replacement flies with whatever is newest. Resilience here is a property of the physics, not a promise in a brochure.

03 · DATA SPEED

The shortest path to the ground.

Round-trip latency from 250 km is on the order of one to two milliseconds, against tens of milliseconds from LEO and about a quarter of a second from GEO. With compute on board, a detection does not wait for a downlink window; the model runs beside the sensor and the result moves across the constellation to whoever needs it. The answer, not the raw data, reaches the ground while the thing it describes is still there.

Space is fragile

The orbit we depend on is crowded, contested and slow.

Most of the space architecture the world relies on sits in low Earth orbit, where ESA expects the debris population to keep growing even if launches stopped tomorrow. VLEO sits beneath it, and the physics clears it.

1.2 million

Pieces of debris larger than 1 cm

Any one of them can end a satellite. About 40,000 objects are tracked; the rest are not.

1,100 a day

Collision-avoidance manoeuvres by one constellation

207,000 in six months, December 2025 to May 2026, by Starlink alone.

~1 week

For a dead object at 200 km to re-enter from VLEO

Against about 200 years at 800 km. Nothing lingers in VLEO.

Resources

The sources behind the figures on this page, and what we have published about flying in VLEO.

ESA · REPORTESA Space Environment Report 2025 NEWSROOM · 2026DIA’s Challenges to Security in Space 2026: threats, VLEO, and DeepSat DIA · REPORTChallenges to Security in Space 2026 (DIA press release)NEWSROOM · 2025Redwire to Develop VLEO Constellation for DeepSat NEWSROOM · 2025DeepSat Wins Direct to Phase II U.S. Air Force Contract to Advance Real-Time Surveillance from Space NEWSROOM · 2026DeepSat at SmallSat Conference in Salt Lake City, UT NEWSROOM · 2026DeepSat at USSOCOM Technical Experimentation 26-3

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