Céleste

Altaïr & Céleste

A vessel shaped to reveal Earth as few have seen it

Zephalto was founded on a simple idea: the beauty of our planet deserves to be experienced by all.
Our capsules, Céleste and Altaïr, were created with one purpose only: to carry travelers gently to the stratosphere and offer them an encounter with Earth that words rarely match.
Everything else is secondary. The capsule is the vessel; the experience is the destination.

Two capsules, one philosophy

Céleste, our larger capsule, and Altaïr, its more agile counterpart, share the same intention: offer a quiet, protected space from which the view becomes the true narrative.
Their shapes, materials, and proportions were developed to stay in the background so the world outside can take center stage. Light and elegant, the carbon structure ensures resistance to cross the clouds and the architecture simply supports the moment when Earth begins to curve and the sky turns from blue to black.

A quiet space to experience wonder

Inside, the design serves a single ambition: allow travelers to settle, breathe, and look outward without distraction. Soft tones, generous seating, and adjustable lighting create a warm, intimate atmosphere.
Céleste offers three private cabins for two guests each; Altaïr, designed for smaller missions, carries fewer travelers with the same sense of calm and comfort. Meals, conversation, contemplation, every moment is shaped by the windows framing the world in all its scale.

Capsule features

The richness of the journey lies within the experience. Imagine yourself seated aboard Céleste. Witness the spectacle as the landscape changes with the rhythm of the ascent, unfolding before your eyes like a theatrical performance. Each seat becomes a privileged spot where the world unfurls in front of you. The curtains part, and gradually, your perception shifts, ascends. The view becomes the spectacle, the capsule turns into the private lodge.

Equipped with a payload capacity both inside and outside, the capsule stands as an optimal research platform for science. Its versatility transforms this work of art into a tool suitable for exploration, comfort, and research.

A spectacular view

At an altitude of 25 km, an exceptional panorama of 1,400 km unfoldsbefore your eyes.

Panoramic windows

Open design, like an eye on the world through 3-metre-wide panoramic windows.

Ultimate privacy

Three individual cabins, designed as intimate cocoons for two people.

Tailor-made experience

Our experience designers are dedicated to crafting a journey exclusively for you.

Exclusive privilege

Take part in a historic flight and become a pioneer of stratospheric travel.

Pressurized capsule

A unique pressurized module with an elegant, sustainable design.

Cutting-edge innovation

of comfort and safety

Behind the quiet atmosphere of our capsules lies the level of engineering reserved for aerospace missions. Céleste and Altaïr are built around the same principles: redundant safety systems, precise altitude control, and materials chosen for their reliability at high altitude. Every component, from pressurization to navigation, has been designed to make the flight feel effortless for travelers, while meeting the strictest standards of aerospace safety.

A platform for science

Beyond passenger flights, our capsules can carry scientific instruments inside and outside the hull. Their stability, altitude control, and long flight duration make them ideal for atmospheric research, imaging, and high-altitude experimentation. Altaïr, in particular, opens the way to rapid deployment missions and new scientific opportunities.