January 17, 2026 • Thousands of people rallied in Copenhagen to push back on President Trump's rhetoric that the U.S. should acquire Greenland. January 17, 2026 • The Administration for a Healthy ...

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, ...

January 17, 2026 • In a post on social media, Trump said a 10% tariff will take effect on Feb. 1, and will climb to 25% on June 1 if a deal is not in place for the United States to purchase Greenland.