The satellites, designed for low Earth orbit, will be equipped with infrared sensors for missile warning and tracking, as ...

SDA awards $3.5B to Lockheed, L3Harris, Northrop and Rocket Lab for Tranche 3 PWSA Tracking Layer missile-warning satellites.

WASHINGTON — The Space Development Agency announced Dec. 19 it awarded about $3.5 billion in contracts to four companies to build 72 missile-tracking satellites for the next phase of a low Earth orbit ...

Northrop Grumman (NYSE: NOC) will build 38 Alpha satellites for the second tranche of the Proliferated Warfighter Space Architecture’s transport layer under a potential $732 million contract with the ...

The U.S. Space Development Agency (SDA) launched 10 space vehicles this week and plans to add 18 more assets into space in June and then will demonstrate the payload capabilities as part of its ...

DENVER, Dec. 19, 2025 /PRNewswire/ -- The Space Development Agency (SDA) has awarded Lockheed Martin (NYSE: LMT) a contract for 18 space vehicles for its Tranche 3 Tracking Layer (TRKT3) constellation ...

The U.S. Space Force Space Development Agency’s (SDA) Tranche 2 Transport Layer-Gamma satellites are to include Ultra High Frequency (UHF) S-band connections, an advanced tactical data link, and ...

An informational graphic by the US Department of Defense's Space Development Agency, detailing the multilayer National Space Defense Architecture. (US Department of Defense) The prototype low Earth ...

Full stack of 21 satellites made by York Space Systems for the Space Development Agency's Tracking Layer Tranche 1. Credit: York Space Systems WASHINGTON — The U.S. Space Force is preparing to launch ...