Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

This repository stores the code examples of the PieChart component for the Getting Started with PieChart tutorial. The PieChart UI component visualizes data as a circle divided into portions (slices) ...

NASA has officially lost contact with a spacecraft that has been orbiting Mars since 2014. The MAVEN spacecraft – Mars Atmosphere and Volatile Evolution – abruptly lost contact with Earth on 6 ...

NASA has lost contact with a spacecraft that has orbited Mars for more than a decade. Maven, an acronym for Mars Atmosphere and Volatile Evolution, abruptly stopped communicating with ground stations ...

CAPE CANAVERAL, Fla. (AP) — NASA has lost contact with a spacecraft that has orbited Mars for more than a decade. Maven abruptly stopped communicating to ground ...

Copyright 2025 The Associated Press. All Rights Reserved. Copyright 2025 The Associated Press. All Rights Reserved. This combination of ultraviolet spectrum images ...