PFFV: VRP May Be A Better Choice

Explore the Global X Variable Rate Preferred ETF (PFFV): risks, yield, performance versus peers, and why experts suggest ...
Space.com

Types of Variable Stars: Cepheid, Pulsating and Cataclysmic

A variable star is, quite simply, a star that changes brightness. A star is considered variable if its apparent magnitude (brightness) is altered in any way from our perspective on Earth. These ...
Investopedia

Variable Cost: What It Is and How to Calculate It

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...
The Aviationist on MSN

X-62 VISTA begins upgrade program to expand autonomy testing

The X-62 Variable Stability In-flight Simulator Test Aircraft will incorporate advanced radar and sensor integration to allow autonomy testing in more complex scenarios. The U.S. Air Force has ...