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PExT Image Gallery

Technicians perform environmental testing on the Polylingual Experimental Terminal (PExT) in preparation for launch. PExT is NASA’s first flight demonstration...
In a large white room within Johns Hopkins Applied Physics Laboratory, two engineers in black York Space Systems coats monitor the Polylingual Experimental Terminal (PExT). The terminal is mounted horizontally on a wheeled metal cart, its white antenna dish pointed outward. The payload is enclosed in white insulation and gold tape. One technician leans over the terminal to investigate PExT’s antenna while the other stands at a laptop to the left of it, reviewing data on a testing monitor.
Team members from the Polylingual Experimental Terminal (PExT) project and the Johns Hopkins University Applied Physics Laboratory pose with PExT...
A group of thirty smiling engineers and technicians in casual and work attire stand inside the Johns Hopkins University Applied Physics Laboratory. To the left, the Polylingual Experimental Terminal (PExT) payload — featuring a white antenna dish and angular wired metal hardware — is mounted on a circular vibration table. The lab is a white, windowed cleanroom with gray flooring, white piping, test benches, and space integration equipment.
A close-up rendering of the Polylingual Experimental Terminal (PExT) in space, highlighting its body-mounted 0.6-meter Ka-band antenna. PExT is NASA’s...
A close-up 3D rendering of the Polylingual Experimental Terminal (PExT) in low Earth orbit, the blue curve of Earth’s surface against a black sky visible in the background. The satellite faces the upper-right of the image, exposed wiring and mechanical details visible beneath its white parabolic dish antenna. Silver cabling and a gold-lined structural base connect the antenna to a square metal satellite bus. Its four dark solar arrays extend outward, partially in frame.
An artist’s rendering of the Polylingual Experimental Terminal (PExT) transmitting data to a relay satellite. PExT is NASA’s first flight...
A 3D rendering of the Polylingual Experimental Terminal (PExT) in low Earth orbit relaying data to another satellite. The PExT spacecraft is visible in the upper-left above Earth, its solar panels extended in an X-shape and its antenna dish angled to face the blurred silhouette of a relay satellite in the foreground. The silhouette dominates the right side of the image, its dual antennas aimed toward PExT as the satellites relay invisible data.
A near-profile 3D rendering of the Polylingual Experimental Terminal (PExT) orbiting Earth. The satellite’s four deep teal solar panels extend...
A near-profile 3D rendering of the Polylingual Experimental Terminal (PExT) orbiting Earth. The satellite’s four deep teal solar panels extend in an X-shape, and its white parabolic antenna dish faces to the right. Metallic gold and silver wires and structural hardware are visible between the dish and its metal satellite bus. In the background, bright sunlight partially illuminates the right side of the Earth’s surface, while the darker left hemisphere is dotted with clusters of glowing yellow city lights.
An artist’s rendering of the Polylingual Experimental Terminal (PExT) payload operating in low Earth orbit. PExT is NASA’s first flight...
A 3D rendering of the Polylingual Experimental Terminal (PExT) satellite viewed at a three-quarter angle in low Earth orbit. The spacecraft’s white parabolic antenna dish is pointed to the upper-right, and its four deep teal solar arrays extend outward to form an X-shape. Earth is partially visible across the lower edge of the frame, the curve of its horizon illuminated by a flare of bright sunlight.
An artist’s rendering of satellites relaying data across global networks to represent the public-private, interoperable architecture supported by the Polylingual...
In shades of blue green, a digital illustration shows a partial arc of Earth against a dark sky and faint stars. Its surface is illuminated by bright geometric lines and glowing dots to represent a multi-network global communications grid. Four relay satellites float above Earth, each emitting a cone of light and projecting a white-blue line of “data” into the interconnected network.
An artist’s rendering of how the Polylingual Experimental Terminal (PExT) will communicate with multiple commercial networks and NASA’s Tracking and...
A diagram illustrating the Polylingual Experimental Terminal’s (PExT) network interoperability. In center, a stylized Earth is surrounded by three concentric orbital tracks labeled LEO (low Earth orbit), MEO (medium Earth orbit), and GEO (geostationary orbit). Four icons representing PExT satellites circle the LEO orbit, highlighted in red, and extend blue data lines toward other network components. These include: a NASA “TDRS” (Tracking and Data Relay Satellite) in GEO, a “Commercial Network 1” satellite in GEO, a “Commercial Network 2” satellite in MEO, and a “Commercial Ground Station” icon on Earth. The commercial satellites linked to PExT connect to additional commercial ground station arrows on Earth, while TDRS connects to an arrow “NSN” (Near Space Network), visualizing PExT’s ability to relay data between commercial and government network assets. On the right, a pink spotlight extends from a PExT icon to a labeled photograph of the real PExT hardware.
The Polylingual Experimental Terminal (PExT) at Johns Hopkins University
The Polylingual Experimental Terminal (PExT). The terminal’s antenna is protected by a silver thermal sheet, its white parabolic dish supported by four white struts. Aluminum-wrapped cables, metal hardware, and a red carrying handle are mounted on the payload’s gold base.
An 8.5 x 11-inch poster highlighting NASA’s Polylingual Experimental Terminal (PExT). PExT is NASA’s first flight demonstration of a wideband...
A color-block poster of the Polylingual Experimental Terminal (PExT). Three rectangular panels in blue, red, and yellow feature stylized illustrations of PExT transmitting data to satellites orbiting Earth, the satellite beside an illustration of a SpaceX Falcon 9 rocket launch, and in a collage of acoustic, vibration, and environmental testing imagery. The bottom of the poster includes the PExT acronym and full name to the left of a paragraph explaining its use of software-defined radios to switch between government and commercial relay services.
A cover graphic of NASA’s Polylingual Experimental Terminal (PExT). PExT is NASA’s first flight demonstration of a wideband polylingual terminal...
A cover- or poster-style graphic featuring a near-profile 3D rendering of the Polylingual Experimental Terminal (PExT) in orbit. The satellite floats above Earth, its curvature backlit by the sun on the right edge of the frame, while the darker left hemisphere is dotted with clusters of yellow city lights. PExT’s deep teal solar arrays form an X-shape, and its white parabolic antenna dish faces to the right. The NASA logo is placed at the upper right corner, and small white text at the upper left reads “National Aeronautics and Space Administration.” At the bottom of the image is the title “PExT: Polylingual Experimental Terminal” in bold white text.
A fact sheet explaining how the Polylingual Experimental Terminal (PExT) will support the agency’s transition from the Tracking and Data...
An informational NASA mission fact sheet for the Polylingual Experimental Terminal (PExT). At the top, a stylized graphic shows light blue data relay lines connecting an icon of PExT to ground stations and satellites in low Earth, medium Earth, and geostationary Earth orbits. To the right, a 3D render of PExT highlights its white dish antenna, white and gold hardware wiring, and deep teal solar panels. A block of text describes how PExT will demonstrate multi-network relay operations in low Earth orbit. NASA contact information and a QR code appear at the bottom.