Find groups of four items that share something in common. Select four items and tap 'Submit' to check if your guess is correct. Find the groups without making 4 mistakes! Each puzzle has exactly one ...
Abstract: This paper presents a tutorial on the Tracking, Telemetry, and Command (TT&C) for spacecraft and satellite missions. In particular, it provides a thorough summary of the design of the TT&C, ...
Scroll down for hints and conversation about the puzzle for Tuesday, Jan. 13, 2026. By New York Times Games Scroll down for hints and conversation about the puzzle for Monday, Jan. 12, 2026. By New ...
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