Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, the enormous, donut-shaped region of icy objects beyond the orbit of Neptune. This latest “inner kernel” was identified by ...

Abstract: The servo system with a flexible structure may experience speed fluctuations due to flexible vibrations, leading to decreased control accuracy. This article introduces a speed fluctuation ...

The Kuiper belt, a disc of icy rocks on the outermost edges of the solar system, seems to have more structure than we thought. In 2011, researchers found a cluster of objects there on similar orbits ...

Copyright: © 2025 The Author(s). Published by Elsevier Ltd. As we enter the second quarter of the 21st century, geopolitical shifts and funding cuts have created a ...

This Selected Issues Paper reviews Ethiopia’s tax system, highlighting its persistently low tax-to-GDP ratio despite sustained economic growth. It benchmarks Ethiopia’s revenue performance against ...

An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies revolving around the sun at a distance ...

The surprise discovery of a huge cloud of molecular gas — the stuff that forms stars — just 300 light-years away is opening up new ways to study the conditions that enable star birth. Such clouds are ...

We are born with a biological survival system that is designed to respond to any environmental or psychological threat presented to us. Our nervous system is constantly processing information and ...

The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system, serving as the final boundary between us and the dark reaches of interstellar ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse. When you ...

1 Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates 2 Department of Pharmacology and Therapeutics, College of Medicine and ...