Abstract: We present a comprehensive tutorial on the finite-difference time-domain (FDTD) modeling of space, time, and space-time-varying media, building upon our previous review by offering a ...

Abstract: Cell-free massive MIMO is a promising technology for sixth-generation (6G) networks, because it can increase the connectivity, provide huge energy efficiency and spectral efficiency (SE).

Amanda Nguyen, a bioastronautics research scientist and activist, was onboard the Blue Origin's New Shepard NS-31 rocket in April 2025 A Vietnamese-American astronaut has opened up about her ...

India has launched what it says is the heaviest satellite ever lifted from the country, using an Indian-made launcher. The BlueBird Block-2 is the largest commercial communications satellite in orbit ...

Russia views Starlink in particular as a grave threat, the findings indicate. Two NATO-nation intelligence services suspect Russia is developing a new anti-satellite weapon to target Elon Musk's ...

A paraplegic engineer has today become the first wheelchair user to jet off into space as Blue Origin launched its latest rocket. Alongside five other passengers, German Michaela Benthaus entered the ...

SpaceX said it experienced an anomaly with one if its Starlink satellites that was likely caused by a small explosion. "The anomaly led to venting of the propulsion tank, a rapid decay in semi-major ...