Horizontal structures in sporadic sodium layers at 23 deg S

Horizontal velocities and propagation directions of gravity waves in the ionosphere over the Czech Republic

Horizontal velocity dispersion of medium-scale travelling ionospheric disturbances in the F-region

Hot Gas in the Diffuse Interstellar Medium: The Soft X-ray Background

Hot Gas in the Galaxy: What Do We Know for Sure?

Hot Molecular Hydrogen in M27 Observed by FUSE

Hot plasmas in interstellar space

Hot Solar-Wind Helium: Direct Evidence for Local Heating by Alfvén-Cyclotron Dissipation

Hotel Payload - a low-cost sounding rocket concept - for middle atmosphere and ionosphere

Houston, We Have A Problem: A History of Air-to-Ground Voice Transmissions from the U.S. Manned Space Program

How Deep Can the Ice Shell on Europa be Radar-Sounded in the Presence of Convection?

How do the water vapor and carbon monoxide ``tape recorders'' start near the tropical tropopause?

How Galaxies Acquire their Gas: A Map of Multiphase Accretion and Feedback in Gaseous Galaxy Halos

How ground-based observations contribute to rocket, balloon and space shuttle experiments: Experience from the past and outlook for the future

How large seems the Moon?

How life is associated with colors in Chinese culture: utilizing colors based on Chinese five-essence theory

How light element addition can lower core liquid wave speeds

How much do helioseismological inferences depend upon the assumed reference model?

How Old is the Milky Way ?

How representative are nighttime determinations of the upper edge of the EF-valley?