Observation of the diffuse component of cosmic soft X-rays

Observation of the energy distribution of thermal electrons in the midlatitude ionosphere

Observation of the energy spectrum of cosmic diffuse X-rays in the energy range 20 keV-4 MeV

Observation of the high energy primary nuclei with balloon-borne emulsion chamber

Observation of the ion composition by Ionosphere Sounding Satellite

Observation of the nocturnal ionosphere of Mars

Observation of the O I ultraviolet intercombination emissions in the terrestrial dayglow

Observation of the solar Lyman-alpha line

Observation of the solar Lyman-alpha line

Observation of the upper atmosphere physics at Asuka Station by the 30th Japanese Antarctic Research Expedition in 1989

Observation of the Z mode with DE 1 and its analysis by three-dimensional ray tracing

Observation of wave-wave interactions in the stratosphere

Observation of weak HF electrostatic turbulence in the auroral ionosphere

Observation of wind corners in the middle atmosphere over Andenes (69 N) during winter 1983/84, summer 1987 and summer 1988

Observation of Δν=4 Vibrational Overtone Transitions in Solid hcp Parahydrogen

Observation strategy of VIRTIS on Venus Express

Observational analysis of the physical conditions in galactic and extragalactic active star forming regions

Observational bounds on atmospheric heating by aerosol absorption: Radiative signature of transatlantic dust

Observational detection of meteor-produced VLF electromagnetic radiation.

Observational estimation of the 'cold trap' dehydration in the tropical tropopause layer: The water vapor match