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

Observation of the ion composition by Ionosphere Sounding Satellite

Observation of the launch of the Atlas 5 EELV with a dual-band QWIP focal plane array

Observation of the millisecond pulsar PSR J0218+4232 by EGRET

Observation of the Moon Shadow in Cosmic Ray Muons

Observation of the Near Plasma Sheet, Ring Current, and Energetic Electrons from Radiation Belts at a Geosynchronous Orbit, March 11-25, 1992

Observation of the nocturnal ionosphere of Mars

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

Observation of the radio burst on August 4, 1983 with the radio telescope "RATAN-600" by the "relay race" method.

Observation of the small-scale structure of the solar wind at the front of a sharp increase of plasma-stream velocity

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 the ~a - ~x Transition of Allyl Peroxy Radical via Cavity Ringdown Spectroscopy

Observation of the Θ+ Pentaquark at HERMES

Observation of Total Solar Eclipse of 1999 August 11

Observation of Transient Intermediates in Redox Processes by Variable Voltage Oscillo-polarography and Cyclic Voltammetry

Observation of transient waves in the Southern Hemisphere

Observation of wave-wave interactions in the stratosphere