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A 70-meter antenna lights up the night sky at the Goldstone Deep Space Communications Complex near Barstow, California. The Moon brightly shines behind the giant antenna.

SCaN.

Science and exploration, enabled.

The SCaN (Space Communications and Navigation) Program operates and manages the communications and navigation systems that are critical to every NASA mission. Spacecraft commands, never-before-seen images, and scientific data are sent and received daily by NASA’s giant antennas on Earth. From the Voyager mission exploring beyond our solar system, to astronauts onboard the International Space Station, space communications provide the crucial connection to our home planet.

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Global Communications Networks

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Missions Enabled

Earth and Beyond

Enabling missions within one million miles of Earth.

Astronauts onboard the International Space Station, missions monitoring Earth, and spacecraft exploring the Moon and beyond depend on NASA’s Near Space Network for communications and navigation services. Using a blend of government and commercial assets, the network supports science and exploration missions bringing back terabytes of critical data each day. 

Three Near Space Network antennas can be seen in front of a rising Sun at the Second Tracking and Data Relay Satellite System (TDRSS) Ground Terminal.
The Second Tracking and Data Relay Satellite System (TDRSS) Ground Terminal at the White Sands Complex in New Mexico.
NASA

SCaN's Focus Areas

Our technologies are critical to every NASA mission.

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.

Space Communications Technology

SCaN is at the forefront of space communications and navigation technology development, pushing the boundaries of what’s possible to better enable space and science missions.

Services and Scheduling

SCaN offers a comprehensive set of standard services based upon its charter to provide communications and navigation for its customers from launch through the entire mission life cycle.

GPS and PNT Policy

SCaN leads in the development of NASA’s overall navigation capability through spectrum coordination, data standards development, and research and development of GPS applications.

An artistic rendering. We see a line art representation of a commercial satellite relay communicating with Earth over a blue starry background. Four blue commercial satellites are seen surrounding the top half of the Earth. A thin bright blue beam of light is shown connecting each satellite to Earth, as a way to represent the flow of data. The surface of the Earth is covered in many small dots connected by lines to represent communication nodes across near-Earth orbit and on Earth.

Communications Services Project

NASA’s Communications Services Project is pioneering a new era of space communications by partnering with commercial industry.

Featured Story

Space Communications: 7 Things You Need to Know

NASA’s Space Communications and Navigation (SCaN) program enables this data exchange, whether it’s with astronauts aboard the International Space Station,…

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