Understanding the effect of sheared flow on microinstabilities

Understanding the escape of water from Enceladus

Understanding the Origin and Evolution of Turbulence in the Inner Heliosphere with Solar Probe Plus

Undriven magnetic reconnection in magnetohydrodynamics and Hall magnetohydrodynamics

Unified electrodynamic theory of magnetorotational and related instabilities in a rotating plasma

Unified Theory of Ghost and Quadratic-Flux-Minimizing Surfaces

Unified theory of the semi-collisional tearing mode and internal kink mode in a hot tokamak: implications for sawtooth modelling

Unified theory of whistler mode instability in the presence of a parallel electric field

Uniform Access to Heliophysics Time Series Data

Uniqueness theorem for the non-local ionization source in glow discharge and hollow cathode

Universal Aspects of the Local Plasma Environment

Universal instability associated with the plasmapause and its role in geomagnetic micropulsations

Universal method of strictly calculating self-consistent fields of realistic plasma particles

Universal power-law index of energy spectrum in downstream region of quasi-parallel shocks

Universal Probability Distribution Function for Bursty Transport in Plasma Turbulence

Universality of solar wind turbulent spectrum from MHD to electron scales

Universality of the Small-Scale Dynamo Mechanism

Unlimited Energy Gain in the Laser-Driven Radiation Pressure Dominant Acceleration of Ions

Unraveling the Causes of Radiation Belt Enhancements

Unstable electromagnetic modes in magnetized Maxwellian plasma